# Decagonal Dome of St Gereon's Basilica, Cologne

- By: T meltzer
- Date: 2022-10-20
- Classification: Photograph
- Museum: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Decagonal_Dome_of_St_Gereon%27s_Basilica,_Cologne.jpg)
- Rights: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0)
- Picture: https://upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Decagonal_Dome_of_St_Gereon%27s_Basilica%2C_Cologne.jpg/1920px-Decagonal_Dome_of_St_Gereon%27s_Basilica%2C_Cologne.jpg
- Who can see it: Teens profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

The decagonal dome of St. Gereon's Basilica, Cologne, a Roman Catholic minor basilica completed in 1227 - the largest dome built in the West between the erection of the Hagia Sophia in the 6th century and the Duomo of Florence in the 15th century.