Seattle Aquarium
1483 Alaskan Way, Pier 59, Downtown
Seattle's aquarium isn't the biggest, but what they do have is pretty great: plenty of hands-on activities for the kids, an array of animals from otters and seals to birds (and fish of all sizes), daily mammal feedings, and an amazing underwater dome that gives you a 360-degree fish-eye perspective on the mysterious activities of the Puget Sound. It gets pretty busy during the school season, so if you’re looking to avoid the crowds, it's best to go before noon or after 3pm.