The three star Castillo Palacio de Papa Luna Hotel, listed as a national monument since June 1931, is located on a rocky cliff in Illueca. Its construction during the 13th century was ordered by Juan Martínez de Luna whose son, Pedro Luna, gained a name in history as Benedict XIII, Pope Luna.

This three storey hotel was renovated in 2006 and comprises a total of 26 rooms of which two are junior suites, two are suites and two rooms adapted for disabled guests. The rooms each feature a bathroom with hair dryer, a mini bar, telephone, television, radio, terrace, central heating and air conditioning. There is a room on the top of the south west fortified tower affording views out over the surrounding area. Four rooms have private balconies facing towards the north.

Amongst the facilities at the air-conditioned Castillo Palacio de Papa Luna is a foyer with reception desk, lift, bar, a la carte restaurant, lounge, conference and seminar centre with a capacity of 100 persons and a car park.