This organization is a department of the finance ministry of Bavaria that opens, shares, develops and preserves 45 of the state's historical monuments in southeastern Germany.

This 780-kilometre long theme route runs from Mannheim to Bayreuth. Along the way, it leads past around 60 medieval castles and palaces of national importance.

The National Trust is a conservation charity dedicated to preserving historic sites, landscapes, and natural beauty. It manages over 500 properties, including gardens, mansions, and coastline areas.

This foundation is based in Potsdam and is tasked with preserving and caring for the approximately 30 castles, villas and gardens of the former state of Prussia.

This organization currently unites 54 palaces, castles, gardens, fortresses and hotels in the Free State of Saxony - from A for Albrechtsburg in Meissen to Z for Zwinger in Dresden.

This organization is part of the treasury of Baden-Württemberg and opens, shares, develops and preserves 60 of the state's historical monuments in southwestern Germany.

This foundation presents the wealth of princely residences and the legacy of court culture in the former capitals of the small states that have merged into present Thuringia.