Citadel Cyriaksburg

Citadel Cyriaksburg is a fortified complex in the northwestern part of Erfurt's old town, built with extensive stone walls and several surviving structures from different periods. The site features casemates, bastions, and historic residential buildings that show how military construction evolved over the centuries.

The fortress first took shape in the late 15th century and was later rebuilt several times to incorporate contemporary defense methods. The most significant changes happened in the 1600s and 1800s, when new fortification designs were added.

For centuries, this fortress represented control and military authority over Erfurt and its surroundings. The surviving structures and walls today show how vital this location was for protecting and governing the city.

The fortress is easy to reach by public transportation and many paths within the grounds are well-paved and accessible to walk. Plan to spend several hours if you want to explore different sections and visit exhibitions in the buildings.

Below the grounds runs a network of tunnels and underground chambers originally built for surveillance and escape routes. Visitors can discover this hidden world on special tours and learn how defenders controlled the fortress from beneath the surface.