Caldeira Velha
A trip to a local thermal pool is among the must-do activities on the Azores island of Sao Miguel. The Caldeira Velha hot springs, which are situated in the island's center, are among the best options. On the rim of the Fogo volcano, Caldeira Velha, also known as the Caldeira Velha Environmental Interpretation Center, is a Natural Monument with hot springs, a brief interpretive trail, and an information center.
Caldeira Velha is able to offer three warm man-made thermal pools and one more natural waterfall pool due to the iron water flowing from above. The Interpretation Centre provides visitors with the opportunity to learn more about the Azores' volcanic origins as well as some background on the area's rich biodiversity. You can visit the Environmental Interpretation Centre and a short walking trail throughout Caldeira Velha during your visit, or you can also take a dip in one or more of the hot spring thermal pools.
Renting a car and driving around Sao Miguel on your own is the most convenient way to navigate the island. A car rental would be my suggestion in this case given the abundance of things to do on the island and the fact that many of the locations can be quite far apart. Caldeira Velha, which can be a perfect add-on to many other local attractions, is situated 25 minutes from Ponta Delgada's main town. It is conveniently close to the EN5-2A highway, which is also the route that leads to Salto do Cabrito and Lagoa do Fogo. There has recently been a new parking lot built, so you should have no trouble finding a spot. Previously, most cars were parked on the side of the road, but this does not appear to be an issue any longer.
Location: Island of Sao Miguel, Azores, Portugal