The Palace of the Mencos is located in Tafalla, a city and municipality within the Chartered Community of Navarre.
Attached by an arch to the Recoletas Convent it is structured as a two-storey, large cubic block of masonry with cut stone, topped by an attic. The main building is adorned with straight windows, except for the main entrance, fronting a half-point arch, featuring the coat of arms of the Mencos above it. Affixed to the building, at an angle, is a prismatic turret in cut stone. On the ground floor, the turret incorporates elements from its mediaeval predecessor, possibly a remnant of the ancient walls of Tafalla. Designed as an observation post the upper floor is embellished by half-point arches resting on pillars.