Catedral de Ávila.

The Catedral de Ávila is defined by its dual identity as a house of worship and a military stronghold. Built into the city’s iconic medieval granite walls, its massive apse—known as the Cimorro—projects outward to function as a defensive bastion. Construction began in the 12th century, marking it as one of Spain’s earliest experiments with Gothic architecture, though its Romanesque roots remain visible in the distinctive red-and-white "blood stone" used in the transept. Inside, the transition to pure white Gothic stone creates a striking visual evolution. Notable highlights include the intricate walnut choir stalls and an unfinished facade that leaves the south tower conspicuously absent. This rugged, fortress-like exterior gives way to a sophisticated interior housing masterpieces by Pedro Berruguete and an alabaster tomb by Vasco de la Zarza.