St. Marienkirche, Lutheran church in Winsen, Germany.

St. Marienkirche is a late Gothic hall church begun around 1415, built of red brick with a single side aisle. Its 63-metre tower is hexagonal and neo-Gothic, clad in green copper, and a passage of Kirchstraße runs through it. Tall windows with grid glazing sit between brick buttresses, and the nave ends in a polygonal choir.

A church existed here by 1233, when its patronage passed from Lüneburg's St. Michaelis convent to Helena von Lüneburg and her son Otto, separating Winsen into its own parish. The present late Gothic hall church was begun around 1415, dated by a brick stamp of that year; the choir roof frame followed in 1437 and the nave's in 1465. The single side aisle and the 63-metre tower with its passage through Kirchstraße shape the building.

The parish serves the town centre and the villages of Hoopte, Stöckte, Gehrden, Laßrönne and Tönnhausen. The name Marien refers to the Virgin Mary; the patronage Unse leve Frowe (Our Dear Lady) is documented from 1464. A St. George altar was endowed in 1336 by the brothers Otto III and Wilhelm II, dukes of Brunswick-Lüneburg.

The church is open for regular Lutheran services and evening concerts where visitors can experience the organ. Check ahead about visiting times, as access outside of scheduled events may be limited.

The tower is 63 metres high and six-sided, and the Kirchstraße passes through a gateway at its base. A brick stamp dated 1415, found on the building, is the evidence used to date the start of construction. Excavations during renovations in 2000 uncovered foundation remains of the earlier church inside the present outer walls.