The church's construction comprises large stone blocks of various sizes, and its thick side-walls are carried by a number of side-buttresses. The exterior of the church is completely plain, without ornamentation, except at the west wall. Atop the west wall stands the bell-gable with its twin openings, and below it is the main door, which has a simple three-arch archivolt, supported in part by four columns and their capitals.
Interior
The church has a single nave, covered with a barrel vault and finished by a semicircular apse. The apse vault begins as a simple-impostcornice, and is separated from the nave by a triumphal arch. At its rear is a single narrow window, vaulted with a voussoir arch. It still contains some of its original Romanesque murals.[3]
^Puig-reig 'Nomenclàtor oficial de toponímia major de Catalunya'.
Departament de Territori i Sostenibilitat, Generalitat de Catalunya
^Carabasa i Villanueva, Lluïsa; et al. (1994). El Berguedà. Barcelona: Generalitat de Catalunya. Direcció General del Patrimoni Cultural. ISBN8439326718.
^"Església de Sant Martí". patmapa (in Catalan). Generalitat de Catalunya-. Retrieved 15 August 2014.