The present church was built in 1871, replacing two earlier churches on the same site: a Romanesque church dating from the 1200s, and a successor built in 1793 that was itself demolished to make way for the current building. Designed by Johan Erik Söderlund, the church was large enough to seat around 1,000 worshippers when consecrated, though a restoration in 1962–63 reduced seating to roughly 500.
Architecturally the church combines Neo-Romanesque, Neo-Classical and Neo-Gothic elements, with a tower and a three-sided sacristy adjoining the apse. The interior is arranged in three aisles, giving a spacious feel to the nave.
The most striking object inside is the altarpiece depicting Christ on the cross, painted in the 1800s by Johann Köler, regarded as Estonia's national painter. According to the sources, the painting once hung in the Swedish church in Saint Petersburg before being brought to Näsum following the Russian Revolution.
Other notable furnishings include a wooden font from 1681, given to the church along with a brass christening basin the same year, and a so-called 'Greek lamp' from the 1700s kept in the porch. The two church bells are of contrasting age: the smaller dates from the 1300s, while the larger was cast in Karlskrona by Magnus Bergstedt in 1766.
The organ has an eventful history of its own: an 1888 instrument by E. A. Setterquist & Son was largely rebuilt in 1963 by Frede Aagaard, who retained the earlier organ's facade while renewing the mechanism, with further work carried out in 1979.