The National Aquarium is an aquarium in Washington, D.C. before the Great War. Doctor Gillian Taylor made four separate requests to construct a new tank for her whale exhibition. This, and all the other requests were denied by Director Barnicky due to budgetary constraints. The Director however had already spoken to the San Francisco Aquarium, whom have agreed to begin construction of an appropriately sized tank and viewing area for Dr. Taylor's whales. He then negotiated with that facility to have Dr. Taylor transferred, this decision was supported by Dallas Bryce of the Museum Authority.
The National Aquarium is mentioned only in Fallout 3.