Self-guided Sightseeing Tour #9 in Dortmund, Germany

The Sigiburg was a Saxon hillfort in Western Germany, overlooking the River Ruhr near its confluence with the River Lenne. The ruins of the later Hohensyburg castle now stand on the site, which is in Syburg, a neighbourhood in the Hörde district of Dortmund. Archaeological evidence suggests the site was occupied in the Neolithic era. The hillfort was raised ca. 700 by Westphalian Saxons. During the Saxon Wars, it was taken by the Franks under Charlemagne in 772, retaken by the Saxons in 774, and taken again and refortified by Charlemagne in 775.

Wikipedia: Sigiburg (EN)

The Syberg is a hill in the Ruhr in the southern part of Dortmund, 240 m above sea level (NN), which is part of the Ardey Hills. The Syberg is home to the Sigiburg, the Vincke Tower, a monument to Emperor William I and other points of interest.

Wikipedia: Syberg (EN)

The Vincketurm is an octagonal, neo-Gothic and 26-metre-high observation tower near the Hohensyburg in the Dortmund district of Syburg in North Rhine-Westphalia.

Wikipedia: Vincketurm (DE)

St. Peter is a Romanesque church in Syburg, now a suburb of Dortmund, Germany. It is the active Protestant parish church of Syburg, officially named "Ev. Kirche St. Peter zu Dortmund-Syburg". It serves as a concert venue for the bimonthly Syburger Sonntagsmusiken.

Wikipedia: St. Peter, Syburg (EN), Website

The Naturbühne Hohensyburg is an open-air theatre in the Dortmund district of Syburg. The theatre is located in a valley of the Ardey Mountains sloping down to the Ruhr below the Hohensyburg.

Wikipedia: Naturbühne Hohensyburg (DE), Website