Church of St Lambertus, Roman Catholic church building in Bergheim, Troisdorf, North Rhine-Westphalia, Germany

St. Lambertus in Troisdorf-Bergheim is a church building that combines different architectural styles from multiple periods. The current structure was built in 1869 in neogothic style, but contains elements and artwork from earlier building phases.

A wooden private church stood on a palatine estate in Bergheim in the early Carolingian period, probably from the 8th century. Archbishop Anno II gave it to the Benedictine abbey of Siegburg around 1064. In 1248, as Cologne Cathedral was begun, a larger stone Romanesque church was started; it was Gothicised in the first half of the 14th century. Replaced in 1869 by August Dieckhoff's neo-Gothic brick building, it was consecrated in 1875.

The church is dedicated to Saint Lambertus, whose statue holds a central place inside. The name and veneration of this saint continue to shape the life and identity of the community in Bergheim today.

The church is easy to explore from inside, as the spaces are open and easy to navigate. Visitors should walk at a measured pace and allow time to look closely at the artwork and sculptures.

The smallest bell, named Lambertus, dates from 1449; in 1908 it was melted down at the Otto bell foundry and its metal recast into a new bell. The church now holds four bells in total.