This is the Church of Saint John the Baptist, commonly known as the Rotunda of Xewkija in Gozo. This shot is from the Sannat side and was taken as the sun was setting behind me.
The church was built in the 20th century on the site of a previous church, the church was designed by the Maltese architect Ġużè Damato. The dome is the world's third highest unsupported dome and one of Gozo's distinctive landmarks.
The plans of Damato were based on the Santa Maria della Salute church of Venezia. The old church was left in place while the Rotunda was being built around it.
The old church was then carefully dismantled and the best sculptures were saved and rebuilt in an adjacent building under the church belfry. It is now known as the Sculpture Museum.