Köln: Cathedral begun in 1248, finished in 1880

Bonn: Downtown views of the city

The Lahn river valley and its prominent cities

Limburg an der Lahn:  Plötze square (14th century)

Limburg an der Lahn: Cathedral (13th century)

Limburg an der Lahn: Inside view of the cathedral

Wetzlar an der Lahn: City view

Bad Camberg: Main square (15th century)

Weilburg an der Lahn: Baroque castle

Weilburg an der Lahn: City gate and entrance into the Altstadt

Wiesbaden: Marktkirche

Frankfurt am Main:St. Bartholomäus cathedral