SEA LIFE London Aquarium

SEA LIFE London Aquarium sits in the base of County Hall on the South Bank, directly across the Thames from the Houses of Parliament. It's one of Europe's largest aquariums and one of London's most consistently popular family attractions. The headline draw is the shark tank with its glass tunnel walkway — you stand beneath circling sharks and rays in a moment that genuinely stops children in their tracks.

Beyond the sharks, the aquarium covers rainforest environments, ocean exhibits, a coral reef, penguin feeding sessions, touch pools, and themed zones across three floors. The flow through the building is well-designed for families, with stroller-accessible routes and feeding presentations timetabled throughout the day so you can plan your visit around them. The penguin colony is a particular favourite with younger children — feeding times draw a crowd but are worth timing your visit around.

Tickets purchased at the door carry a substantial premium over online prices, so booking ahead is strongly recommended. The South Bank location means there's an abundance of food options within walking distance, including Borough Market, Gabriel's Wharf, and the Southbank Centre food vendors. The nearby Southbank walk along the river provides a lovely free extension to the day before or after the aquarium, giving kids space to run and families a scenic ending to the outing without any additional cost.