Troisdorf

Troisdorf is a large district town in Rhein-Sieg District stretching along the Sieg River between Bonn and Cologne. The municipal area includes residential neighborhoods, commercial zones, and protected natural spaces across 62 square kilometers.

The first recorded mention dates back to 832 through a reference to the settlement of Sieglar. In 1969, the town grew substantially by merging with the neighboring communities of Sieglar, Altenrath, and Friedrich-Wilhelms-Hütte.

The Picture Book Museum at Burg Wissem Castle displays illustrations and narrative art spanning several centuries of European children's literature. The permanent collection offers visitors insight into how visual storytelling has evolved over time.

The municipal administration offers digital services through an online portal where residents can check collection schedules, register vehicles, and complete administrative procedures. Most formalities can be handled conveniently from home.

The town established an advisory council for foreign citizens in 1972, becoming the first German municipality with this initiative. This institution marked an early step toward local integration and participation of immigrant communities.

Location: Rhein-Sieg District

Elevation above the sea: 55 m

Shares border with: Niederkassel, Lohmar

Website: https://troisdorf.de

GPS coordinates: 50.81611,7.15556

Latest update: December 4, 2025 23:01