Lisbon: Oceanarium
The Oceanarium in Lisbon, Portugal (Portuguese: Oceanário de Lisboa) is an aquarium dedicated to the ocean. It is located in the Parque das Nações, which was the exhibition grounds for the Expo ’98.
The main exhibit is a 1,000-square-metre (11,000 sq ft), 5,000-cubic-metre (180,000 cu ft) tank with four large 49-square-metre (530 sq ft) acrylic windows on its sides, and smaller focus windows strategically located around it to make sure it is a constant component throughout the exhibit space.
Source: Wikipedia
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