The monastery of Sant Pere de Galligants, of which only the church and the cloister remain visible, is one of the most remarkable examples of Catalan Romanesque. The date of its foundation is not known, but it already existed in the first half of the s. X. Almost nothing remains of the pre-Romanesque monastery, although remains of an earlier building are preserved. The construction of the current building began in the first half of the twelfth century, around 1131, when Ramon Berenguer the Gran bequeathed a large donation to pay for the works. At the end of this century, the cloister had to be finished.
The church has a basilica plan, with three naves separated by pilasters that support semicircular arches, and a cross with asymmetrical arms, which gives the building great uniqueness. The central apse, preceded by the presbytery, is decorated with a cornice from which the vault starts, and with arches on semi-columns topped with capitals; in the southern arm, covered with a barrel vault, there are two open apsidioles on the east side, while in the northern one, which is covered with a dome on trumpets, two apsidioles open, one to the east and the other to the north. The bell tower is located on this dome. The decoration of the church is of high quality.