The National Aquarium in Baltimore is made up of a series of square, rectangular, oval and pyramidal shapes. The building's exterior is mainly stone grey and navy blue. There are also decolored rectangles above the aquarium's entrance that bear resemblance to a few different types of naval flags. Upon entering vistors are greeted with a small waterfall leading into a freshwater tank containing salmonids. As you go through the building you eventually reach an open area with a open water filled enclosure below and five levels above and a small sub-floor below for viewing the blacktip reef enclosure. Each floor focuses on a specific environment or theme. The floor at the very top is a contained by the pyramid glass roof mentioned earlier and houses a greenhouse-like rainforest section. Afterwards visitors would pass down a spiraling slope that displays an Atlantic coral reef exhibit on the upper levels and a shark tank on the lower levels. This leads the vistor back to the starting part near the blacktip reef.
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