Downtown Aquarium Dive into food and fun at the Downtown Aquarium – an underwater adventure! Conveniently located in the heart of downtown Denver is the Downtown Aquarium, an incredible dining and entertainment complex featuring more than a million gallons of aquarium exhibits. Amusements for the entire family plus the unique Aquarium Restaurant, Dive Lounge, Nautilus Ballroom, 4D Theater, Stingray Reef, hundreds of marine species, otters, and Sumatran tigers make this trip worthwhile! *BUS LEAVES AT 10:00AM*