Castillo
Alarcón's fortress dates to the 8th century, and in the 14th century it came into the hands of the infante (child prince) Don Juan Manuel, who wrote a collection of classic moral tales. Today the castle is one of Spain's finest paradores. You'll have to be a guest at the hotel to actually enter, but day-trippers can explore the grounds and extensive patio. If you're not driving, you can take a bus to Motilla and from there take a short taxi ride to the castle.