When does the event take place?

On Sunday, September 13, 2026, starting at 11:00 AM.

How much is the entrance fee?

Admission is free as the Day of the Open Monument is generally offered without charge.

Where is the residential house located?

At Roonstraße 40 in Bonn's villa district, 53175 Bonn.

Is registration required?

No registration requirements are mentioned in the available sources for this offer.

Is the event inside or outside?

It is an indoor visit to the residential house.

Who organizes the action day?

The Day of the Open Monument is coordinated nationwide by the German Foundation for Monument Protection, with support from the city and local monument players in Bonn.

Residential house from the 1920s in the villa district

Name: Residential house from the 1920s in the villa district
Start: 2026-09-13T13:00:00+02:00
End: 2026-09-13T19:00:00+02:00
Location: Wohnhaus aus den 1920er-Jahren im Villenviertel

A rare glimpse behind the facade of Bonn's villa district

On the day of the open monuments, a residential house from the 1920s in Bonn's villa district will open its doors, inviting a special look at history, architecture, and monument preservation. The nationwide action day is themed 'NetzWERKE: Monuments & Infrastructure' in 2026 and is free of charge. ([tag-des-offenen-denkmals.de](https://www.tag-des-offenen-denkmals.de/teilnahmeregeln?utm_source=openai))

Historic atmosphere in southern Bonn

The villa district in Bad Godesberg is one of the sought-after residential areas in Bonn, characterized by a grown urban structure and historical building substance. A house from the 1920s tells a lot about lifestyle, building culture, and the handling of existing substance. Such monuments make visible how living culture and design have developed over decades. ([bonnnet.de](https://www.bonnnet.de/wp-content/uploads/2018/04/OGHRL_Broschuere_SUED_2018_web.pdf?utm_source=openai))

Experience the monument rather than just look at it

The day of the open monument brings visitors to places that are often private or only accessible in a limited manner. In Bonn, volunteer engagement, the Lower Monument Authority, and the German Foundation for Monument Protection shape the event, which has been taking place nationwide since 1993 and regularly attracts a broad audience in the city. ([bonn.de](https://www.bonn.de/themen-entdecken/planen-bauen/tag-des-offenen-denkmals.php?lang=de))

A house with charisma and details

Those who come through the villa district on this Sunday will experience not only architecture but also event atmosphere in a small, personal setting. The charm lies in the details: original proportions, historical appeal, and the special closeness between visitors, residents, and building history. This is what creates an intense event experience. ([bonn.de](https://www.bonn.de/themen-entdecken/planen-bauen/tag-des-offenen-denkmals.php?lang=de))

Conclusion

This Bonn monument promises a quiet yet impressive insight into a private residential house with history. Those who enjoy architecture, urban history, and authentic public atmosphere should mark this date firmly in their calendars and experience the house live on the day of the open monument. ([tag-des-offenen-denkmals.de](https://www.tag-des-offenen-denkmals.de/teilnahmeregeln?utm_source=openai))