Yes, Washington DC has the National Aquarium, located in the Commerce Department building downtown

The National Aquarium sits inside the Commerce Department building at 1401 Constitution Avenue NW, in the Federal Triangle area between the White House and the National Mall. It is the oldest continuously operating aquarium in the United States, open to the public since 1873. The building itself is a historic federal structure, and the aquarium occupies the basement level.

The aquarium is not the large, sprawling facility some visitors expect. It holds roughly 2,000 animals across 70 tanks, with a focus on freshwater and saltwater species from the Atlantic coast and tropical regions. The collection includes piranhas, sea turtles, jellyfish, eels, and various fish species, along with a touch pool where visitors can handle horseshoe crabs and sea stars.

Admission is paid, and hours vary by season. The aquarium typically closes on Thanksgiving and Christmas. You can check current hours and ticket prices on the National Aquarium's official website before your visit.

Key Takeaways

  • The National Aquarium is located in the Commerce Department building at 1401 Constitution Avenue NW, a short walk from the National Mall.
  • The facility houses about 2,000 animals in 70 tanks, with both freshwater and saltwater exhibits.
  • Admission requires a paid ticket; children under two are typically free, but prices and age discounts change seasonally.
  • The aquarium is in the basement of a federal building, so expect a smaller, more intimate experience than large regional aquariums.
  • Parking is limited nearby; public transit (Metro Red, Blue, or Orange lines to Metro Center) is the most practical option.

Hours, Admission, and Getting There

The National Aquarium is open most days from 9 a.m. to 5 p.m., though hours shift seasonally and may close earlier in winter months. Ticket prices are typically in the $15 to $20 range for adults, with discounts for children and seniors, but these amounts vary. The best way to confirm current hours and exact prices is to visit the National Aquarium's official website or call ahead.

Parking in the Federal Triangle area is scarce and expensive. The Metro is the most practical route: the Red, Blue, and Orange lines all stop at Metro Center, which is a five-minute walk from the building. If you drive, several paid lots operate in the area, but expect to pay $10 to $20 for a few hours.

What You'll See Inside

The exhibits focus on Atlantic coastal ecosystems and tropical waters. You will see piranhas, seahorses, jellyfish, sea turtles, moray eels, and a variety of reef fish. The touch pool is popular with children and allows hands-on contact with horseshoe crabs, sea stars, and other invertebrates. The aquarium also maintains a small shark tank.

The facility is compact — most visitors spend 45 minutes to an hour inside. The basement location means lower ceilings and narrower corridors than large modern aquariums, which can feel crowded during peak hours. If you visit on a weekday morning or early afternoon, you will encounter fewer crowds.

Accessibility and Facilities

The National Aquarium is located in a federal building with elevator access to the basement level, making it wheelchair accessible. Restrooms are available on-site. The building has a cafeteria, though bringing your own snacks or water is also permitted.

The basement setting means the space is climate-controlled year-round, which can be an advantage on hot summer days or cold winter mornings. However, the lack of natural light and the enclosed basement environment may feel cramped for visitors who prefer open, airy spaces.

Nearby Attractions on the National Mall

The National Aquarium's location puts it within walking distance of major Smithsonian museums, most of which are free to enter. The National Museum of Natural History, National Gallery of Art, and National Museum of American History are all within a 10-minute walk. The Washington Monument and Lincoln Memorial are also nearby.

Many visitors combine the aquarium with a morning or afternoon at one of the free museums, making it part of a larger National Mall itinerary. The area has numerous food options, from casual cafes to sit-down restaurants.

Best Times to Visit

Weekday mornings and early afternoons tend to be quieter than weekends and school holidays. Summer months and spring break bring the largest crowds. If you want a more relaxed experience with shorter lines at the touch pool, visit on a Tuesday, Wednesday, or Thursday morning.

The basement location means the temperature and humidity stay constant regardless of weather outside, so the aquarium is equally comfortable in any season. Plan for about an hour inside, plus travel time to and from the Metro.

Frequently Asked Questions

Is the National Aquarium in DC the same as the one in Baltimore?

No. Washington DC's National Aquarium is a separate, smaller facility in the Commerce Department building. The National Aquarium in Baltimore, Maryland, is a much larger facility about 40 miles north. They are distinct institutions with different collections and management.

Can I bring children under two?

Yes. Children under two typically do not require a ticket, though you should confirm current pricing policies on the aquarium's website. The touch pool and smaller tanks are engaging for toddlers, though the basement setting and crowds can make strollers difficult to maneuver.

What is the best way to get there by public transportation?

Take the Metro Red, Blue, or Orange line to Metro Center station. From there, walk north on 13th Street NW toward Constitution Avenue. The Commerce Department building is at 1401 Constitution Avenue NW, about a five-minute walk from the station.

Can I take photos inside the aquarium?

Personal photography is generally permitted for non-commercial use. Flash photography may disturb the animals, so many visitors use natural light or no flash. Check the aquarium's current photography policy when you arrive or on their website.

How long does a typical visit take?

Most visitors spend 45 minutes to an hour inside. If you spend time at the touch pool or read all the exhibit information, you might stay closer to 90 minutes. The compact size means you can see the entire collection in a single visit without rushing.