Making a Splash.

The Gaylord Opryland Resort and Convention Center in Nashville, located a short walk from the Grand Ole Opry, already boasted nearly 3,000 rooms and nine acres of indoor gardens, but in December it added what purports to be the nation’s first “upscale” water park. Aside from the thrills—indoor surfing, a tower with multiple water slides, a pool with a rock-­climbing wall — there are plenty of places to relax too.