The Caldeira Velha Environmental Interpretation Centre is a cool spot in São Miguel Nature Park where you can learn all about the natural wonders of the area. It's like a mini museum that teaches you about the volcanic origins of the islands and showcases the biodiversity, geodiversity, and geothermal resources of the Caldeira Velha Natural Monument. Plus, you can chill out in four thermal pools surrounded by lush greenery. It's a great place to soak up some knowledge and relax in nature at the same time!