Hot Wells, Historic spa ruins in San Antonio, United States.

Hot Wells is a spa resort ruin located in San Antonio along the San Antonio River, situated near natural sulfur springs. The remaining stone walls and structural fragments once supported a hotel with bathing pools and treatment facilities built around the warm mineral water source.

An artesian well dug in 1892 for the Southwestern Lunatic Asylum produced sulphur water at 103–104 °F, unfit for the hospital, so it was leased out. In 1893 McClellan Shacklett won the lease and built a bathhouse and hotel in a riverside pecan grove, modeled on Arkansas Hot Springs. A fire destroyed the bathhouse on December 23, 1894; the Texas Hot Sulphur Water Sanitarium Company, led by Otto Koehler, rebuilt, and by 1902 the Hot Wells Hotel had 80 rooms and an octagonal bathhouse with 45 private bathrooms.

The site attracted visitors seeking the therapeutic properties of the natural hot mineral water for bathing and relaxation. People came from surrounding areas to experience the healing treatments offered at the pools and bathing facilities.

The site is open to visitors as a historical park where you can walk among the ruins along the San Antonio River. Wear comfortable shoes since you will be walking on uneven ground through the scattered stone structures and foundations.

Judge Roy Bean, the notorious justice of the peace from Langtry, shipped a mountain lion and a black bear to the Wells, adding to McClellan Shacklett's exotic animal collection. The animals shared the grounds with bathers who came for the sulphur water.