The interior of the building is open to the public and houses temporary art displays, a large mural by Burgos artist José Vela Zanetti and an exhibition of antique pharmaceutical equipment.
It was added to the list of National Monuments in 1943.
References
^Martínez Burgos, Matías (1950). "Torre y arco de Santa María: estudio final comparativo"(PDF). Boletín de la Comisión Provincial de Monumentos y de la Institución Fernán González de la ciudad de Burgos. 29 (113). Diputación Provincial de Burgos: 270–274.