The white travertine terraces are formed by mineral-rich waters cascading down the mountainside, creating a stunning natural wonder. Visitors can soak in the warm waters while admiring the ancient ruins of Hierapolis, a nearby archaeological site. 3. Banff Upper Hot Springs, Canada: Located in Banff National Park in Alberta, Canada, Banff Upper Hot Springs is a popular destination for visitors looking to relax in the warm waters while surrounded by the stunning Rocky Mountains. The hot springs are open year-round, making them a great destination for a relaxing soak after a day of exploring the national park.