The present church building opened in 1817 and was raised to cathedral status in 1914. The original building was designed in the
perpendicular Gothic style by architect
Archibald Simpson, one of Simpson's many commissions in the city. While three sides of the cathedral were built out of the local
granite, for which Aberdeen is famous, the facade of the structure, facing
King Street, Aberdeen, was built from
sandstone for economical reasons despite Simpson's opposition. Thus, the cathedral comprised nave and flanking aisles with sandstone ashlar to the King Street elevation and
snecked granite rubble to the rear. The chancel was added by
George Edmund Street, 1880 and the porch by
Robert Lorimer in 1911. During the 1930s, the cathedral was renovated to commemorate the 150th anniversary of the consecration in Aberdeen of
Samuel Seabury (1729–96) as the first bishop of the
Episcopal Church in the United States of America, an event which took place on the site currently occupied by
Aberdeen City Council's headquarters. At this time the plan was to create an elaborate, cruciform building with central tower, paid for by a gift of the Episcopal Church in the United States of America. However, the
Wall Street crash halted this plan. Instead the cathedral was enlarged and embellished by
Ninian Comper. Comper's decorative scheme is largely intact; it includes a vaulted ceiling with decorative panels depicting the arms of the then 48 US states and local families. The chancel has a large gold-painted
baldachino and carved oak screen. In 1938, the US ambassador
Joseph Kennedy, accompanied by his 21-year-old son
John F. Kennedy, opened an extension to the building. ==Temporary closure==