Cross, transept and straight head wall consisting of one single nave giving on to four small, rectangular side chapels. Its current appearance is due to important alteration work undertaken in neo-Classical taste in the year 1862. Work was carried out on a Gothic style building with three naves of which only the tower, the stairway used to access it and two pointed access doors, one at the foot of the building and the other to the left, both of which are dated at the end of the XIII century but later altered, are conserved today.
This place of worship documented from at least the year 1325 replaced a modest church dedicated to St. John that had been built outside the walled enclosure and had disappeared completely by the time work started.
The Epiphany triptych is not currently exhibited for worship but kept in the vestry.