Think of it as the nerd’s version of water splash photography. Of course, a trip through zero-g wouldn’t be complete without a few more experiments.

Today, however, the "ZoHo" district is home to young entrepreneurs, a rain garden blooming with flowers, and - like other central neighborhoods of this Dutch port city - a new sense of green purpose.

Dollywood's Splash Country water park in Pigeon Forge, Tennessee, opens for its 25th season on May 10. The park features 16 rides, a wave pool, lazy river, and live music performances.

The City of Knoxville manages four splash pads for even more water fun to beat the summer heat. The water fountains are open daily 10 a.m.-9 p.m.