Marble Caves of Patagonia in Chile – Lake Carrera. The lake is on the border of Argentina and Chile, and the caves are located on the side of Chile. The caves are the three main grotto: Chapel (La capillaries), Church (El Catedral) and Cave (Cueva). Visitors can explore the caves on a small boat or kayak, but only after the waters of Lake Carrera calm down and be serene.
Termas Geometricas hot springs near Coñaripe, Chile. "These hot pools are as good as any I've ever been in. We went on a cold rainy day and it was mind blowing. Steam and mist everywhere. All of the pools are set in a rocky gorge. There seem to be about 10-15 pools of different temperatures, and two freezing cold waterfalls to quench yourself in." Dan G. on Trip Advisor