Conical roof

The 13th-century church in the monastery of Geghard, Armenia
The Armenian Apostolic Cathedral of the Holy Cross on Akdamar Island, Lake Van, Turkey
The tomb of Sheikh Adi in Lalish (northern Iraq), the religious center of the Yazidis with holy structures with conical roofs
The Round Church, Cambridge, England
Fisherman's Bastion, Budapest, Hungary
Buddenturm (de), a 12th-century defensive tower, in Münster, Germany
Modern conical roofs on the Bundeskunsthalle in Bonn, Germany

A conical roof or cone roof is a cone-shaped roof that is circular at its base and terminates in a point.