Dreifaltigkeitskirche, Gothic church building in Alsfeld, Germany

The Dreifaltigkeitskirche is a two-aisled Gothic hall church in southwest Alsfeld, 45 metres long and 10.5 metres wide, with a steep saddle roof and a slate-clad octagonal roof turret topped by a weathervane shaped as a lion with the letter A. Its rough rubble-stone walls are profiled only at the windows, buttresses and portals, and 14 pointed-arch windows light the interior, whose cross-ribbed vault rests on consoles set high on the walls. The narrower three-bay north aisle is joined to the nave by two octagonal piers.

The monastery was probably founded at the end of the 13th century and had a church before 1300. In the second half of the 14th century the three-bay hall was renewed, and around 1400 the choir. Between 1415 and 1436 the nave was extended by three bays and a three-bay side aisle added. After the Reformation in 1525 and the monastery's dissolution in 1527 the church stood unused until a donation by Volkmar Stamm of Lauterbach allowed restoration from 1662; it was consecrated as the Protestant Dreifaltigkeitskirche on 30 May 1664.

The church serves the Protestant community of Alsfeld as a winter worship space where services and events take place regularly. Visitors can observe how the building remains central to local religious life today.

The church welcomes visitors and offers guided tours through the Protestant parish office. Public transportation stops are located nearby for convenient access.

The church was built without a tower; its baroque octagonal roof turret is fully covered in slate and topped by a weather vane shaped as a lion bearing the letter A. The turret holds four bells cast in 1742, 1747 and 1962, tuned to the Wachet-auf motif.