Pozo de la Salud El Hierro

El Hierro's famed Pozo de la Salud (Well of Health) was long known for miraculously healing local cattle, but has been recognised for its mineral-rich healing properties since the 18th century (in the mid 19th-century its water was even exported to New York and Cuba). You can walk down to the small seaside well, whose waters are said to cure a variety of ills, though it’s generally closed up. It's 3.5km northwest of Sabinosa off the HI500. If you fancy taking the waters, book in for a stay or treatment at the adjacent Hotel Balneario Pozo de la Salud.