Highlights

  • • Natural thermal pools with water at 35-40 °C
  • • Ruins of the partially submerged village of Tiermas
  • • Free and open access to the thermal pools
  • • Natural surroundings by the Yesa reservoir
  • • Area with Roman history and thermal tradition
  • • Uneven trails and mountainous terrain

Description

The Balneario de Tiermas is a set of natural thermal pools located on the shore of the Yesa reservoir in Zaragoza province. These hot springs emerge spontaneously and have been valued since ancient times for their therapeutic properties. The setting combines the natural beauty of the Aragón River with the presence of the reservoir, creating a unique landscape where warm water contrasts with the cool mountain environment.

When visiting Tiermas, you can immerse yourself in several natural thermal pools, some with temperatures ranging between 35 and 40 degrees Celsius. Additionally, you can observe the ruins of the old village of Tiermas, partially submerged after the reservoir's construction in the 1960s. This blend of history and nature offers a unique experience where warm water flows among stones and remnants of traditional architecture.

Historically, Tiermas was known for its medicinal waters since Roman times, although the village was abandoned and largely submerged due to the creation of the Yesa reservoir. This event marked a change in local life, but the thermal waters remained a cherished natural resource. The area reflects the interaction between human activity and the natural environment, with a legacy that invites reflection on water management and heritage preservation.

Access to the thermal pools is free and does not require reservations. It is recommended to wear suitable footwear for walking on rocky and wet terrain and to respect the natural surroundings by avoiding litter. There are no developed tourist facilities, so plan your visit with water and provisions. Accessibility is limited due to uneven trails, making it unsuitable for people with reduced mobility.

Key Information

Visit Duration

1-2 hours

Recommended Seasons

Spring, Autumn

Pricing

Free

Accessibility

Low

Kid-Friendly Pet-Friendly No Booking Required

Related Destinations

Guide

Essential information for visiting Tiermas Spa

Location

In this area

Practical Information
Pricing
Free
Visit Duration
1-2 hours
Features & Services
  • Accessibility:Low
  • Kid-Friendly:Yes
  • Pet-Friendly:Yes
  • Booking:No Booking Required
Planning Information

Recommended Seasons

Spring · Autumn

Best Time to Visit

The best time to visit Tiermas is in spring and autumn when outdoor temperatures are mild, allowing comfortable enjoyment of the thermal waters.

Visitor Tips

Wear comfortable, non-slip footwear for walking on rocks and trails. Bring water and some food as there are no services in the area. Respect the natural environment and avoid leaving trash. Visit in small groups to minimize environmental impact. Note that accessibility is limited, so it is not recommended for people with reduced mobility.

Historical Facts

The village of Tiermas was abandoned and partially submerged after the construction of the Yesa reservoir in the 1960s, although its thermal waters have been known and used since Roman times, reflecting a long-standing medicinal tradition in the area.

Frequently Asked Questions

Get answers about Tiermas Spa

Yes, the pools are freely accessible and you can swim in them while respecting the natural environment.
No, access to the thermal pools is free of charge.
Access is by road from Yesa or Sigüés, followed by a final stretch on foot along uneven trails.
It is suitable for children under supervision and pets are allowed, provided the site's rules are respected.
No, there are no tourist facilities or services, so it is recommended to bring what you need for your visit.