Mula Castle, locally known as Castillo de Mula or Castillo de los Vélez, lies on a rocky crag in the town of Mula in the province of Murcia in Spain.
Mula Castle was built around 1524, shortly after Vélez-Blanco Castle and around the same time as Marquis de los Vélez Castle, all also owned by Don Pedro Fajardo y Chacón, 1st Marquess of Los Vélez. It was built on the site of an earlier Arab fortification, dating back to the 8th century, probably incorporating parts of it, like the walls of the outer bailey.
Entrance to the inner bailey was via the wall of the outer bailey and then over a drawbridge, protected by a box machicolation. That drawbridge has now disappeared and replaced by a concrete slab.
When I visited, the outer bailey could freely be accessed but the gate to the inner bailey was closed. I learned that recently, because of an accident, the outer bailey is now fenced off and thus also not accessible anymore.
At present Mula Castle is private property and can not be visited. Too bad, it looks wonderful.