The National Aquarium is the reason many people first come to Baltimore, and it still anchors the Inner Harbor. Its striking glass-pyramid building on Pier 3 opened in 1981 and became the model for the waterfront aquariums that followed across America. Inside, a long series of ramps carries you up through the building past habitats that range from Chesapeake Bay and Atlantic coast waters to a coral reef and an open ocean tank circled by sharks, before you emerge in a humid rainforest under the glass roof, with birds flying overhead. Across a footbridge on Pier 4, the dolphin area and a gallery of drifting jellies sit near the Pier 4 Canteen, and outside on the water the Harbor Wetland is a floating patch of restored marsh with its own hours. The aquarium is entirely indoors, which makes it the best rainy-day plan in the city, and a visit easily fills half a day. Admission is timed and popular dates can sell out, so book online before you go. This page links to the official National Aquarium visit page, where you can check hours and buy timed tickets.
How to visit: the aquarium is at 501 East Pratt Street on the Inner Harbor, a short walk from Harborplace, the historic ships and most downtown hotels. In November 2026 it opens Monday to Thursday from 10:00 to 17:00, Friday from 10:00 to 21:00 and Saturday and Sunday from 10:00 to 18:00, and last entry is one hour before closing. It is closed on Thanksgiving, 26 November, and on Christmas Day, and it keeps longer hours over the Thanksgiving weekend and between Christmas and New Year. Children aged four and under go free; adult tickets are among the pricier in the city, so it is worth planning your time well.
What to expect: the main route is one-way and climbs gradually, so allow at least two to three hours, more if you want to see a dolphin session or one of the 4D films sold as add-ons. Small backpacks are allowed but may be searched, and larger bags can go in paid lockers near the entrance. Outside food and drink are not allowed, but there are two cafes inside. Wheelchairs are available free on a first come, first served basis.
Making the most of it: book the first entry slot on a weekday to beat school groups, or come on a Friday evening, when the building is open late and quieter. Partner garages nearby offer a discounted flat rate if you validate or reserve, and the Inner Harbor sightseeing cruise and the historic ships are steps away for the rest of the day.
What to expect
The experience
A one-way, self-guided route up through ocean, reef and Chesapeake habitats to a rooftop rainforest, with a separate dolphin and jellies pier.
Best time
The first timed entry on a weekday morning, or a Friday evening when the aquarium stays open late.
How long
Two to three hours for the main building and Pier 4, longer with a dolphin session or a 4D film.
Tips
Book a timed ticket online, validate your parking inside for the discounted garage rate, and remember it is closed on Thanksgiving and Christmas Day.
Quick picks
- Best for
- First-time visitors, families with children of any age and anyone looking for a rainy-day plan on the harbor.
- Families
- Children four and under go free, the ramps suit strollers, and the shark tank and rainforest are the favorite moments for kids.
- Couples
- Book a Friday evening entry, when the crowds thin out, and walk the lit-up harbor promenade afterwards.
- Pair with
- The Historic Ships in Baltimore next door, then an Inner Harbor sightseeing cruise from the finger piers.
- Time needed
- Half a day including lunch and a walk along the harbor.
Good questions
What are the National Aquarium hours in November 2026?+
It opens Monday to Thursday from 10:00 to 17:00, Friday from 10:00 to 21:00 and weekends from 10:00 to 18:00, with last entry an hour before closing. It is closed on Thanksgiving, 26 November.
Do I need to book National Aquarium tickets in advance?+
Yes, booking online is strongly recommended because admission is timed and popular dates can sell out. Weekday mornings and Friday evenings are the easiest times to get a slot.
How long does a visit to the National Aquarium take?+
Most visitors spend two to three hours, and keen animal lovers can stay much longer. Allow extra time if you add a dolphin session or a 4D film.
Where should I park for the National Aquarium?+
Several partner garages around the Inner Harbor offer a discounted flat rate when you validate your ticket inside or reserve online. Most downtown hotels are within walking distance, so many visitors simply walk.
Can I bring food into the National Aquarium?+
No, outside food and drink are not allowed, but there are two cafes inside the building. Picnic tables and benches outside on the piers are fine for a packed lunch.
