A ruined castle in the municipality of Filisur of the Canton of Graubünden in Switzerland.
It is included on the register of the Swiss Inventory of Cultural Property of National and Regional Significance.
A ruined castle in the municipality of Filisur of the Canton of Graubünden in Switzerland.
It is included on the register of the Swiss Inventory of Cultural Property of National and Regional Significance.
https://en.wikipedia.org/wiki/Greifenstein_Castle