Kursum Mosque - Credit: Wikimedia Commons
The Kursum Mosque (, ) of Kastoria is a historical Ottoman-era mosque in the town of Kastoria, Western Macedonia, Greece. It is mostly in a ruinous state as little renovation work has been done. It is not open for worship. It took its name from a Turkish word meaning lead, as its dome is covered with lead. Read more on Wikipedia
Source: en.wikipedia.org