Europe's largest indoor aquarium wows children and adults alike with a vast salt-water tank featuring an array of fish, including several types of shark. Along the way you pass through habitats representing the North Atlantic, Pacific, and Indian oceans, where puffins and penguins dive into the water, sea otters roll and play, and tropical birds flit past you. You then descend to the bottom of the tank to watch rays float past gracefully and schools of silvery fish darting
this way and that. To avoid the crowds, come during the week or early in the day. The Oceanarium also hosts a range of activities outside normal opening hours, such as Saturday morning concerts for under-3s against the lively backdrop of the central tank.
Esplanada D. Carlos I (Doca dos Olivais), Lisbon, 1990-005, Portugal