While excavating the cave of El Castillo in 1911, they received news that the workers knew of another cavity nearby that villagers called "La Pasiega."
Conservation efforts are still underway and, as with El Castillo in Chichen Itza, visitors to the site are now prohibited from climbing the pyramid.
Sergio Badilla Castillo | Bernal Díaz del Castillo | Roberto Castillo Sandoval | Montealegre del Castillo | Jaime Castillo Velasco | Celso Advento Castillo | Castillo de San Marcos | Castillo de la Real Fuerza | Antonio Cánovas del Castillo | Abelardo Castillo | Juan del Castillo | José Videla Castillo | José Chavéz y Castillo | Isabella Castillo | Francisco Castillo Fajardo, Marquis of Villadarias | Eliecer Castillo | El Castillo | Castillo de Teayo, Veracruz | Castillo de Teayo | Castillo de San Pedro de la Roca | Susan Castillo | Sergio Rogelio Castillo | Roberto Castillo (baseball) | Roberto Castillo | Pedro del Castillo | Otto René Castillo | Nery Castillo | Monteagudo del Castillo | Marino Vinicio Castillo | ''La Giradilla'' on the watchtower of the Castillo de la Real Fuerza |
For instance a handclap in front of the staircase of the El Castillo pyramid is followed by an echo that resembles the chirp of a quetzal as investigated by Declercq.
El Castillo Hotel is a building with medieval-style architecture that was built in 1870 and is located in Valle Hermoso (Córdoba), Argentina.
Historical and architectural points of interest include the 16th-century church of Santa Eulalia, the Hermitage of Nuestra Señora del Arroyal (17th century), the necropolis of El Castillo (6th and 7th centuries), the necropolis of Nava (14th century), the necropolis of Bañuelos (14th century?), as well as several medieval bridges.