Nuuk the town centre with the airport, the outlying districts and neighborhoods of Nuussuaq, Qinngorput, as well as Qernertunnguit in Quassussuup Tungaa. In 2012 the buses transported more than 2 million passengers around the city of Nuuk. Hans Egede's House, built in 1721 by the Danish missionary Hans Egede, is the oldest building in Greenland. Standing close to the harbour among other old houses, it is now used for government receptions. The Church of Our Saviour of the Lutheran diocese of Greenland was built in 1849 and the tower was added in 1884. The red building with a clock tower and
Nuuk Airport flying boat, with the aircraft using the waterways of the Nuuk Port as a landing site. In 1962 a PBY Catalina crashed near the port, killing 15 people on board. The tragedy was one of the factors leading to the decision to invest in a helicopter fleet. The Sikorsky S-61N machines—still in use in 2010—proved to be a more reliable mode of transport for the city, providing exclusive service for the Nuuk city for more than a decade—from the purchase date in 1965 until the late 1970s. Even in the later era of the fixed-wing, turboprop plane domination, the S-61N