Above a seashell shop near the beach sits a free museum holding gold bars and more than 10,000 maritime artifacts. I had to read that twice.
Gold bars, upstairs, next to the shell shop.
That one detail changed how I think about gray, soggy days in Delaware. A rainy forecast suddenly sounds less like a problem and more like an excuse.
This small state packs in restored airplanes you can climb inside, touch tanks with horseshoe crabs, and a four-story indoor playscape. There are chickens to feed indoors-ish, dinosaurs to admire, and roller rinks with theme nights.
When the clouds roll in and the beach towels stay folded, where do you go first? This might be the perfect time to find out.
1. Air Mobility Command Museum
Few museums let you walk right into the planes, but this one swings the doors open. Some of the aircraft are open for visitors to step inside and explore.
You’ll find the collection in a restored World War II hangar on Dover Air Force Base. It’s the only museum in the country devoted to airlift and air refueling history.
More than 35 aircraft fill the grounds and hangar. They range from World War II propeller planes to big four-engine jet transports.
Look for a restored B-17 and Air Force Two in the lineup. That’s a pretty fancy pair to see on a drizzly afternoon.
Inside, the Hallway of Heroes honors Medal of Honor recipients. You can also see the old Dover AFB Control Tower, which served from 1956 to 2009.
Got a future pilot in the family? Free flight simulators are available for kids ages 10 and up.
Admission and parking are both free, which makes the rain feel even less annoying. A gift shop is on site, though there’s no restaurant, so plan snacks ahead.
The museum is open Wednesday through Sunday. Thursday and Sunday mornings tend to be quieter than busy Saturdays.
Address: 1301 Heritage Rd, Dover AFB, DE 19902
2. Delaware Museum of Nature & Science
Dinosaurs make excellent rainy day company. They never complain about the weather, and they look great in the PaleoZone.
That gallery at the Delaware Museum of Nature and Science features dinosaurs and Cretaceous creatures. Kids tend to head there first, and honestly, who could blame them?
Next, the Global Journey Gallery takes you through ecosystems from around the world. The Regional Journey Gallery brings things home with Delaware’s own natural habitats.
Little ones have spaces made just for them. The Discovery Gallery and the Nature Nook are designed with young children in mind.
Behind the scenes, the museum holds millions of scientific specimens. Its mollusk and bird collections are especially large.
Here’s a fun bit of history for you. The museum first opened in 1972 as the Delaware Museum of Natural History.
After renovations from 2020 to 2022, it reopened with its current name in May 2022. Exhibits are interactive, and live animals are part of the experience too.
A cafe means you can refuel without leaving. There’s also a gift shop and free on-site parking.
Weekday visits, especially Wednesdays, tend to be calmer than weekends.
Address: 4840 Kennett Pike, Wilmington, DE 19807
3. Discoversea Shipwreck Museum
Treasure hunting usually involves boats, maps, and a lot of luck. In Fenwick Island, it just involves climbing upstairs.
The Discoversea Shipwreck Museum sits above a seashell shop on Coastal Highway. Inside, you’ll find more than 10,000 maritime artifacts, including gold bars.
Yes, real gold bars. That alone might make your soggy beach day worth it.
The collection leans into pirate history with enclosed exhibits. You’ll see artifacts from pirate ships, plus items connected to the Titanic and the White Star Line.
There’s also a workshop space as part of the setup. It gives you a peek at the work that goes into preserving these finds.
The best part might be the price. Admission is free, which makes it an easy pick when the rain won’t quit.
Timing matters here, so check before you go. The museum is seasonal, with hours on Saturdays and Sundays from 11 a.m. to 3 p.m.
Free on-site parking makes the stop simple. Restrooms are available, but there’s no restaurant.
Pair it with a browse through the shells downstairs. It’s a fun little combo for kids who love the ocean but not the downpour.
Address: 708 Coastal Hwy, Fenwick Island, DE 19944
4. Zwaanendael Museum
A little slice of the Netherlands stands right in Lewes. The building is a replica of a Dutch city hall, and it’s hard to miss.
The Zwaanendael Museum honors Delaware’s first European settlement. That settlement was Dutch, which explains the eye-catching design.
Inside, exhibits cover local history in a friendly, easy-to-follow way. You’ll learn about Dutch heritage and the area’s whale hunting era.
Shipwrecks get their moment too. Lewes sits near the mouth of the Delaware Bay, so the sea plays a big role in its story.
Art displays mix in with the history panels. Interactive displays give curious visitors plenty to take in.
Staff here know their stuff. Ask a question, and you’ll likely get a good story along with the answer.
Best of all, the museum is free. That makes it an easy stop when your beach plans get washed out.
It’s open Wednesday through Saturday, from 10 a.m. to 4:15 p.m. Plan around Sundays, Mondays, and Tuesdays, when it’s closed.
Parking options include free and paid lots nearby. After your visit, downtown Lewes is just steps away for a stroll once the drizzle eases.
Address: 102 Kings Hwy, Lewes, DE 19958
5. Delaware Agricultural Museum
Tractors, trains, and chickens walk into a museum. It sounds like a joke, but in Dover it’s just a regular day.
The Delaware Agricultural Museum shows off tractors and farm equipment from earlier eras. Displays explain how farming shaped early America and Delaware.
Indoors, a model train exhibit keeps young eyes busy. There’s even a plane among the collection, which surprises plenty of first-time guests.
The indoor galleries stay comfortable on hot days. On rainy ones, they’re a dry place to roam and learn.
Next door sits an 1890s village with buildings like a barn and a windmill. The structures are carefully arranged to spark your imagination.
Then come the chickens. Visitors can feed and pet them at the coop, which might become the highlight for your kids.
If the rain lightens up, the village is a nice bonus. If not, the indoor exhibits give you plenty to explore.
A gift shop rounds out the visit. Active military members can ask about discounts.
Hours run Wednesday through Saturday from 10 a.m. to 4 p.m., plus Sunday afternoons. Free on-site parking keeps things easy.
Address: 866 N Dupont Hwy, Dover, DE 19901
6. Delaware Art Museum
London isn’t the only place to see a world-class Pre-Raphaelite collection. Wilmington has the largest one outside the United Kingdom.
The Delaware Art Museum was founded in 1912 to honor illustrator Howard Pyle. He was a Wilmington native, and his work still holds a place of pride here.
Beyond the British paintings, you’ll find American art and illustration. Brandywine school illustrators and John Sloan’s city scenes add even more to explore.
Much of the collection was created or held by Delaware collectors. That local connection makes the galleries feel personal.
Rain outside? The galleries are the perfect place to slow down and really look.
A 9-acre sculpture garden waits outdoors for drier moments. You can save it for when the clouds break.
The museum cafe makes a lovely mid-visit break. A gift shop has plenty to browse as well.
Hours run Wednesday through Sunday. Thursdays stay open until 8 p.m., a nice option for an evening out.
Studio art classes and social events also happen on campus. Free parking on site makes the trip simple.
Address: 2301 Kentmere Pkwy, Wilmington, DE 19806
7. Mid County Lanes and Entertainment
Strikes, spares, and bumper cars all under one roof. That’s a solid lineup when the sky turns gray.
Mid County Lanes and Entertainment in Middletown offers bowling on modern, well-kept lanes. The facility stays clean, which matters when you’re borrowing shoes.
Bowling is only the start. Laser tag, bumper cars, and an arcade round out the fun.
There’s also a pool table for anyone who prefers a slower game. A pro shop serves bowlers who take things more seriously.
Kids have tons of activities to choose from here. It’s also a popular spot for birthday parties.
Got a free morning? Weekday mornings tend to be the quietest times to visit.
Thursday evenings usually draw the biggest crowds. Plan around that if you want your pick of lanes.
The hours are generous, too. It’s open until midnight Monday through Saturday and until 9 p.m. on Sundays.
Active military members can ask about discounts. Free parking is available in the lot and on the street.
Rainy days can drag on, but a few frames and a laser tag rematch fix that fast. Just be ready for some friendly trash talk.
Address: 875 N Broad St, Middletown, DE 19709
8. Seaside Nature Center
Horseshoe crabs are older than dinosaurs, and you can meet one up close in Lewes. Bring curious hands.
Seaside Nature Center sits inside Cape Henlopen State Park. It’s an educational visitor center packed with local marine life.
The touch tank steals the show. You’ll find horseshoe crabs, hermit crabs, and fish waiting for gentle pokes.
Large aquariums show off fish from local waters. Seeing them indoors is a fun way to learn what swims off the Delaware coast.
Native reptiles live in their own tanks too. Kids can compare scales and shells without getting wet.
Staff share helpful facts and run family-friendly activities. A learning center and shop add even more to explore.
When the rain stops, the fun keeps going outside. Hiking trails start nearby, and a bike shack offers free bikes for family use.
It’s open Wednesday through Sunday from 10 a.m. to 4 p.m. The center is closed Mondays and Tuesdays.
Restrooms are available on site. Keep in mind it’s within a state park, so plan your visit around park entry.
For ocean lovers stuck indoors, this spot feels like the beach came inside to visit.
Address: 15099 Cape Henlopen Dr, Lewes, DE 19958
9. Biggs Museum of American Art
Three floors of American art await in downtown Dover. On a wet afternoon, that’s a lot of dry ground to cover.
The Biggs Museum of American Art displays paintings, sculpture, silver, and furniture. Many pieces speak to Delaware’s history and its people.
Famous names show up throughout. Look for work by the Peale family and sculptor Hiram Powers.
Illustration fans get a treat here as well. N.C.
Wyeth, Howard Pyle, and Frank E. Schoonover are all represented.
Modern and contemporary art adds fresh energy. Artists include Peter Sculthorpe, Edward Loper Sr., and Elizabeth Catlett.
Exhibits change throughout the year, so repeat visits feel new. The museum keeps adding pieces through new acquisitions.
Want to save a little? General admission is free every day.
Hours run Thursday through Sunday from 10 a.m. to 5 p.m. It also opens on Martin Luther King Jr. Day and Presidents’ Day.
A gift shop sits on site, and free parking is available. There’s no restaurant, so grab lunch in town before or after.
Address: 406 Federal St, Dover, DE 19901
10. Christiana Skating Center
Roller skates turn a rainy Saturday into a roll-and-groove session. Newark has a rink ready for it.
Christiana Skating Center is a family-friendly roller rink. It hosts classes, leagues, and plenty of theme nights and events.
The rink, restrooms, and food area are kept clean and neat. That’s a nice comfort when you’re spending hours there.
Music plays as you loop around the floor. Staff help keep sessions running smoothly, including games during skate time.
Hungry skaters can visit the food bar. Pizza is the star on the menu.
Not a pro on wheels yet? Classes are a smart way to build confidence before your next theme night.
Timing takes a little planning here. Sessions run on set schedules, so check before heading out.
Saturdays offer several sessions from late morning into the evening. Sunday afternoons and Friday nights are open too.
Tuesday and Thursday evening sessions add midweek options. The rink is closed Mondays and Wednesdays.
Parking is available on site. Lace up, hold the wall if you need to, and let the rain do its thing outside.
Address: 801 Christiana Rd, Newark, DE 19713
11. Delaware Children’s Museum
A 30-foot climbing structure lives indoors on the Wilmington Riverfront. Rain can’t touch it.
That climb is called Stratosphere, and it’s one of the big draws at the Delaware Children’s Museum. It’s the First State’s only children’s museum.
Exhibits focus on playful learning in science, technology, reading, engineering, arts, and math. Kids from toddlers to teens can find their favorite corner.
ECOConnect explores nature and clean energy. Training Wheels gives toddlers a transportation-themed space to play.
Structures lets kids try out careers in the building industry. Bank on It teaches the basics of money in a hands-on way.
The water table is a crowd favorite. Spare clothes might be a smart idea.
The museum opened in 2010. It reopened on June 18, 2021, after a 15-month closure.
Families will appreciate the changing tables and nursing room. A gift shop and theater are also part of the building.
Hours run Wednesday through Sunday. Wednesdays stay open until 8 p.m., great for an after-school outing.
Free parking is available nearby. Bring energy, because the kids certainly will.
Address: 550 Justison St, Wilmington, DE 19801
12. Shell We Bounce Trampoline Park
Gravity gets a day off near Lewes. Shell We Bounce Trampoline Park gives kids room to fly indoors.
Trampolines come in a variety of setups here. Dodgeball and basketball games add some friendly competition.
Then there’s the foam pit, perfect for dramatic landings. Airbag jumps and balance equipment keep things interesting.
A four-story playscape towers over the space. Younger kids also get a toddler bouncy house and a jungle gym.
Need a break from bouncing? The arcade offers plenty of games for tired legs.
A cafe serves food on site, so nobody has to bounce on an empty stomach. Free Wi-Fi helps grown-ups pass the time too.
Party services make it a go-to for birthdays. Active military members can ask about discounts.
Saturday afternoons and evenings tend to be busiest. Weekday visits usually offer more elbow room.
The park opens daily at 10 a.m. It stays open until 9 p.m. on Fridays and Saturdays.
For a beach-town family, this might be the best rainy day trick in Delaware. Everyone leaves tired, happy, and ready for a very good nap.
Address: 32295 Lewes Georgetown Hwy, Lewes, DE 19958
