Built on the former site of the city's largest sardine cannery, the Monterey Bay Aquarium is now the biggest tourist attraction in the area. Known for its regional focus on the marine habitats of Monterey Bay, it Kelp Forest tank is what you would find on the Monterey Bay floor just outside the aquarium. Other popular exhibits include the Jellyfish as well as the Open Sea million-gallon tank. Admission is $49.95, but $39.95 for seniors