20 Best Swimming Holes in the U.S.

"A unique warm-water scuba-diving and swimming destination at a resort in Midway, Utah, housed inside a roughly 55-foot-tall limestone rock formation formed about 10,000 years ago when melting snow seeped underground. The resort has created a tunnel through the rock at ground level for easy access; the mineral-rich waters are maintained at a constant 90 to 96 degrees, and reservations and fees are required for swimmers, divers, and snorkelers." - Talia Avakian Talia Avakian Talia Avakian is a lifestyle reporter based in Los Angeles with a love for outdoor excursions, off-the-beaten-path local finds, remote and historic hotels, and innovations in food. She was previously the digital news reporter for Travel + Leisure. Travel + Leisure Editorial Guidelines