Castillo de San Cristobal
What the experts agree on
Underground remnants of an 18th-century castle discovered beneath Plaza de España, now a modest museum featuring original walls and period cannons—a hidden historical layer beneath Tenerife's main square.
“Located underneath Plaza España are the still-standing fragments of the former castle that once sat majestically here.”
– Lonely Planet
"The walls of the city castle were uncovered when the car park under the Plaza de España was built. The site is now a museum that includes an 18th-century cannon." Full review