(image courtesy of  Bbb at wikivoyage)

Hambach Castle
Built in the first half of the 11th century, Hambach Castle was reconstructed several times during the 13th century. In 1552 it was burned down, and only provisionally restored. It suffered further damage during the War of the Palatinian Succession in 1688 and was finally abandoned.
In 1832, Hambach Castle became famous due to the Hambacher Fest, a demonstration which took place at the ruins. The Palatinate population, among others, showed their discontent over the Bavarian administration demanding freedom and democracy. Ever since then, Hambach Castle has been considered as the cradle of German democracy.
In 1844, first attempts to restore the castle were made by Bavaria, but the project stopped already in 1846. On the occasion of the 150th anniversary of the Hambacher Fest, the castle finally was completely restored.
Today, the castle is a museum and a convention center with about 200.000 visitors each year. Hambach Castle has hosted various events for German Chancellors, Presidents and foreign guests of state such as the US President Ronald Reagan and President of France Jacques Chirac.

For a virtual tour visit the following links:
Inner yard
Tower
Terrace

This event is covered by the registration fee.