Step into a rare urban sanctuary in the heart of Old San Juan. Las Ruinas is a full-circuit thermal spa, bathhouse, and wellness gym — a 2.5-hour escape purpose-built to quiet your mind and body. Move through four wellness environments at your own pace during your 2.5-hour session: the heated swimming pool and contrast plunge pools, three distinct heat sanctuaries (dry sauna, infrared sauna, and eucalyptus steam room), a restorative lounge...