Jump in if you dare.
Hidden in Texas Hill Country—just about an hour from Austin—is an artesian spring known by locals as Jacob’s Well. Whether you’re diving in during one of the blazing hot days of summer or on a more mild winter afternoon, the waters that bubble up here remain a moderate 68 degrees.
Experienced divers and adrenaline junkies have long-loved this watering hole, where you can free dive more than 100 feet below the surface from an opening in the bed of Cypress Creek.
The jump in requires a leap off a nearby outcropping. The network of caves has been an attractive spot for daredevils, though SCUBA diving is not permitted and can be very dangerous in this narrow sliver of earth. Instead, stick to sunbathing and swimming, which is permitted between Memorial Day and Labor Day.
In the off-season, visitors can enjoy nearby hikes, and can still admire (and Instagram) the unusual swimming spot—with no fees or reservations necessary.
Plan ahead: the county is now restricting the number of visitors to Jacob’s Well, so be sure to reserve a spot in advance. Your time at the swimming hole will be limited to two hours—plenty of time to take in the sights and swim to your heart's content.
For something a bit more low-key, head to nearby Blue Hole, in Wimberly, which has grassy picnic spots and twin rope swings.