Blackpool Pleasure Beach, Blackpool, U.K. (6,000,000)

Open annually from March through November, Blackpool Pleasure Beach caters to an older set looking to let loose and feel like kids again. Rides for thrill-seekers include the Pepsi Max Big One and Valhalla, but there's a wide array of family rides as well, including the first commercial monorail in the world.

The roller coasters at Alton Towers in Staffordshire are sure to please thrill-seekers – Nemesis, for example, has G forces more powerful than those at a space shuttle take-off. Younger kids can explore “There’s Something in the Dung Heap,” a new playground all about dung.

For more information: Blackpool Pleasure Beach, Alton Towers