Outdoor Gravity Park is the only zorbing park in the USA, located in Pigeon Forge, Tennessee. If you're planning a weekend away from Nashville, this makes for an extra fun family adventure. Just add 10 gallons of water and up to 3 people, and you can slip and slide down the hill with 3 different tracks to choose from. Zorbing is an unforgettable experience, make sure you cross it off your bucket list!