Hallgrímskirkja (Icelandic pronunciation: [ˈhatlkrimsˌcʰɪrca], church of Hallgrímur) is a Lutheran (Church of Iceland) parish church in Reykjavík, Iceland. At 73 metres (244 ft), it is the largest church in Iceland and the sixth tallest architectural structure in Iceland after Longwave radio mast Hellissandur, the radio masts of the US Navy at Grindavík, Eiðar longwave transmitter and Smáratorg tower.