Fodor's Expert Review Castillo de Coca
Perhaps the most famous medieval sight near Segovia—worth the 52 km (32-mile) detour northwest of the city en route to Ávila or Valladolid—is the Castillo de Coca. Built in the 15th century for Archbishop Alonso de Fonseca I, the castle is a turreted Mudejar structure of plaster and red brick surrounded by a deep moat. Highly Instagrammable, it looks like a stage set for a fairy tale, and, indeed, it was intended not as a fortress but as a place for the notorious voluptuary to hold riotous bacchanals. The interior, now occupied by a forestry school, has been modernized, with only fragments of the original decoration preserved.