The chapel is built of horizontal pine logs, clad externally with boards, and its interior walls are limewashed, giving the space a rustic, aged atmosphere. Local tradition holds that fishermen from Norrtälje built a chapel here in the 15th century, when families from the mainland spent their summers on Bergön alongside the fishing harbour and settlement that once stood beside it. However, dendrochronological analysis carried out in 2011 and confirmed in February 2012 dated the existing timber structure to 1636, considerably later than the old tradition suggests — a discrepancy worth bearing in mind when reading about the chapel's origins.
The small altar stands against the east gable wall, enclosed by an altar rail. To the north is the pulpit, an unusually archaic piece that may date from as early as the 1500s, making it older than the chapel building itself. Pentagonal in form, its panels are divided into a chequered pattern, and one panel bears traces of a merchant's or craftsman's mark. The pulpit did not originate here but was brought from Högs kyrka.
Today the chapel is valued particularly as an atmospheric venue for christenings and weddings, its simple wooden interior offering a striking contrast to more elaborate parish churches in the region.