The vaults were built specifically to address the structural failure of the 16th-century Santa María church caused by the river's path.
Construction of these tunnels effectively reclaimed land for the town square by moving the river flow underground.
The masonry is predominantly limestone, reflecting the geological composition of the surrounding Sierra de Cazorla mountain range.
During times of high rainfall, the structure demonstrates original hydraulic management techniques to prevent flooding in the town center.
Bóvedas del Río Cerezuelo is an underground architectural structure located beneath the Plaza de Santa María in Cazorla, designed to channel the Cerezuelo River to provide a stable foundation for the town's primary church. These stone vaults, dating back to the 16th century, were constructed after the original church collapsed due to the river's instability. The engineering project involved burying the river course to create a massive elevated platform. Visitors navigate through the subterranean stone tunnels, which showcase period masonry and hydraulic engineering. It serves as a prime example of Renaissance-era urban planning in the Sierra de Cazorla region. The site is physically connected to the ruins of the Santa María church above it.
The perspective from the base of the central vault arches looking toward the light at the tunnel exit.
Wear sturdy, non-slip footwear as the ground within the vaults can be damp and uneven.
The tunnels are narrow and enclosed; individuals prone to claustrophobia should be aware of the environment.
Check in at the local tourism office before descending, as access is sometimes coordinated with tours of the adjacent ruins.
Do not attempt to enter during heavy rain events, as the structure is an active river channel.
Operations can be suspended during periods of high water levels or severe weather for safety reasons.
No flash photography is permitted inside the tunnels to preserve the masonry, and touching the historical stonework is discouraged.
