The Church of Santa Cristina stands on the right bank of the Ucero River, swollen by the waters of the Abión, which flows into it a few meters upstream. Its location offers a view of the river’s gentle murmur, next to the ancient stone bridge, at the foot of the rock castle, and under the watchful gaze of the ancient Uxama Argaela.

The church has a Latin cross plan, with a single nave, a raised choir at the foot of the nave, a half-dome resting on pendentives covering the transept, and a flat-fronted presbytery. The roof of the central nave is a barrel vault with lunettes and sections separated by semicircular transverse arches that correspond to the exterior of the buttresses.

The bulk of the current church dates from the early 18th century. It was designed by Domingo Zaguirre and built by Alonso Martínez de Ochoa and Manuel de Arribas.

In 1779, the building suffered a fire, and restoration work was completed in 1782. The most notable feature from earlier periods is the Renaissance façade, dating from the second half of the 16th century, with two Corinthian columns set before pilasters on a podium that flank a semicircular arch with a relief of the Eternal Father in the tympanum.

In 1789, Father Felipe Sanz of Oxoma, a canon of the Cathedral, requested and received the relics of Saint Christina from Rome and entrusted them to this church, to which she is dedicated; she has been venerated in its main altarpiece ever since.