The large parish church is dedicated to San Vicente Mártir (St Vincent the Martyr.) It was constructed in the 18th century from stone ashlars, of particularly large proportions around the skirting, and the style can be described as late Baroque. The geometric design around the doorway was the typical counterpoint to the late Baroque elements, which reveal themselves inside the church; the large dome that covers the crossing, the decoration of the capitals, the pilasters and the moulded cornice that runs around the perimeter of the church.

The layout is also indicative of the late-Baroque typology; a Latin cross layout with three naves. The central nave is covered with a barrel vault with lunettes and the other sections are covered with groin vaults and house inter-connecting chapels. The dome over the crossing is supported by pendentives.

The sepulchre of Don Félix Guillermo de Rebolledo Palafox, Lord of Salas Altas, Salas Bajas, Alazán and Aguilar is housed inside the church. He died in 1715. The inscription on the tomb reads as follows:
HIC I’ACET NOBILIS, D.D. FELIX GUILLERMUS, REBOLLEDO DE PALAFOX, DOMINUS LOCORUM SALAS ALTAS, SALAS BAJAS, A ‘LAZAN, ET AGUILAR& VIXIT LXXXIV ANNOS OBIT DIE IX MENSIS FEBRERARIS, ANNO, MDCCXV.

The title of Marquis of Lazán was created by Carlos II in the year 1688 in favour of Cayetano Rebolledo de Palafox. The house of the marquis is located in the Plaza de San Antón (the square) in Salas Bajas and is currently called Villa Zazurca, but was traditionally known as the Noveno. In the cellars of the house are the original large containers that were used to store the oil, wine and cereals brought in by the tenants of the Marquis.

The Lazán peak is close to Salas Bajas. Its name is well known as being the brand of an excellent oak-aged wine from nearby Bodega Pirineos; Señorío de Lazán.

The great-great-grandson of the Marquis de Lazán was General Palafox, the heroic defender of the city of Zaragoza during the War of independence. In 1808 Zaragoza was key to the French invasion strategy as its conquest would have opened up the way to Levante. The Aragonese people presented the iron will of Palafox and the strength of his army (13,000 men) against the French siege, and despite the invaders being better equipped, they eventually withdrew from the city.