Old San Juan Thermal Spa: Hot/Cold Plunge, Sauna, Steam & Gym

About

Unlimited, full-day access to a rare urban sanctuary in the heart of Old San Juan. Las Ruinas is a full-circuit thermal spa, bathhouse, and wellness gym built to quiet your mind and body. Move through four wellness environments at your own pace during your session: the heated swimming pool and contrast plunge pools, three distinct heat sanctuaries (dry sauna, infrared sauna, and eucalyptus steam room), a restorative lounge with unlimited herbal tea and light snacks, and a fully equipped gym. Every visit includes a robe, slippers, a dedicated locker, and unlimited fresh towels — just bring a swimsuit. Between circuits, sink into the cozy lounge wrapped in soft towels. This is wellness done simply and completely. Before you leave, refuel at the in-house Smoothie Spa with nourishing blends made to refresh. Located steps from Old San Juan's historic streets — the perfect pause in the middle of any itinerary We close daily at 7:00 PM and at 8:00 PM on weekends!

What's included

• Each guest has its own locker
• Guests can enjoy teas, along with warm and cold water, to hydrate and reset between circuits. Light snacks such as nuts and popsicles are available to help replenish and balance the body.

Good to know

• Not recommended for travelers with spinal injuries
• Not recommended for pregnant travelers
• Not recommended for travelers with poor cardiovascular health
• Travelers should have at least a moderate level of physical fitness

Cancellation

For a full refund, cancel at least 24 hours before the scheduled departure time.

Frequently asked

• What is the cancellation policy?+

  For a full refund, cancel at least 24 hours before the scheduled departure time.

• What is included in the price?+

  Each guest has its own locker · Guests can enjoy teas, along with warm and cold water, to hydrate and reset between circuits. Light snacks such as nuts and popsicles are available to help replenish and balance the body.

• How does booking work on this site?+

  Reservations are processed by Viator. We hand you off through an affiliate link — the price you pay is identical to booking direct on viator.com, and a small commission funds this site.