St. Nikolai, Lutheran church in Harvestehude, Germany

St. Nikolai is a round Lutheran church with a bell tower, built 1960–1962 to designs by Dieter and Gerhard Langmaack at Klosterstern. The tower, topped by a weather vane about 3 m tall, reaches 89.4 m; the building measures roughly 40.5 m by 35 m. Its asymmetrically curved, chalice-shaped nave seats over 500 people under a bright wooden ceiling, facing a plain altar.

The parish of St. Nikolai at Klosterstern was formed at the end of 1956 from parts of the parishes of St. Johannis (Harvestehude), St. Johannis (Eppendorf), Matthäus (Winterhude) and St. Andreas. The new church was built in 1960–1962 to the design of Dieter and Gerhard Langmaack, near the site of the Herwardeshude monastery that stood there from 1295 to 1530. The old St. Nikolai in the city centre was left as a permanent ruin commemorating the victims of war, and its former parish was temporarily assigned to St. Katharinen and St. Michaelis. The new building became Hamburg's fifth main church.

The Coester window, finished by Elisabeth Coester in 1939 for the old St. Nikolai, was never installed there because of the war; the baptistery of the new church was designed around it. The altar mosaic Ecce Homines, after a design by Oskar Kokoschka, was made by Sergio Cicognani in 1974 and hangs freely above the altar cross.

The church is located in the Eimsbüttel district and is easily accessible by public transport. Visitors can enter during regular opening hours to view the interior and artwork at a leisurely pace.

The five bells cast by Friedrich Wilhelm Schilling in Heidelberg in 1962 were made from the metal of the bells of the destroyed predecessor church. The new church stands near the site of the Herwardeshude monastery, which existed there from 1295 to 1530.