Open Monument Day at the mausoleum of Carstanjen in Bonn


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A rare glimpse into the mausoleum of Carstanjen on the Rhine
For Open Monument Day®, the mausoleum of Carstanjen in Bonn-Plittersdorf opens its otherwise locked doors. On Sunday, September 13, 2026, the listed building invites visitors to a special observation of the work between architecture, culture of remembrance, and Rhine landscape from 1 PM to 4 PM.
A cultural monument with extraordinary aura
The temple-like dome structure is one of the most prominent monuments on the Bonn riverside. Built at the end of the 19th century for the von Carstanjen family, the mausoleum combines representative architecture with personal memorial culture. The rotunda, the order of columns, the wrought-iron gates, and the surrounding park create a quiet, almost solemn exhibition atmosphere that clearly differs from a classic museum visit.
Architecture that makes history spatially tangible
Visitors experience a place where art history and architectural history directly intertwine. The tours in half-hour intervals between 1 PM and 3:30 PM provide insights into the creation of the dome building, its ornamental details, and the family history of the Carstanjens. The combination of classicist-inspired form language, sacred spatial effect, and Rhine view makes the place an impressive artistic experience.
Guided tours, photo documentation, and discussions on-site
In addition to the tours, a photo documentation showcases the architectural history, architecture, and historical development of the mausoleum. The event also informs about claims and its current use as a Christian urn burial place. Thus, the monument visit becomes a cultural education experience that addresses questions of remembrance, post-use, and monument protection.
The park by the Rhine as a quiet resonance space
The idyllic park surrounding the mausoleum enhances the special character of this place. Amidst greenery, water, and stone, a concentrated, calm atmosphere unfolds, inviting contemplation and lingering. Those who want to experience architecture in harmony with nature will find a rare, authentic place for aesthetic experience here.
Conclusion: A monument visit with depth
Open Monument Day® at the mausoleum of Carstanjen offers rare insights into an important Bonn cultural monument. Anyone wishing to experience architecture, history, and culture of remembrance with special intensity should not miss this date and discover the mausoleum on-site.
Official channels of the mausoleum of Carstanjen:
- Instagram: No official profile found
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- Website: https://www.buergerstiftung-rheinviertel.de/projekte/mausoleum-von-carstanjen










