Moody Gardens
Three glass pyramids on the Galveston waterfront, each a separate attraction, and together the best bad-weather backup on the Texas coast. The Aquarium Pyramid holds penguins, seals, sharks and a Humboldt penguin colony behind floor-to-ceiling glass. The Rainforest Pyramid is a genuine indoor jungle with free-flying birds, monkeys, sloths and a bat cave. A 3D theater and a ropes course fill out the rest. Day passes cover multiple pyramids and are the sensible buy if the beach plan has fallen apart.