Grace Church was designed by James Renwick Jr., who also designed St. Patrick's Cathedral.
The choir and the area around it was redesigned in 1691 to the design of Lorenzo Gafa', the same architect who had designed Mdina's Cathedral.
He also designed St Paul's Cathedral, Dundee.
Drawers were filled with architectural drawings, including many by Sir Christopher Wren, the 18th-century architect who designed St. Paul's Cathedral and 51 other churches in London.
Butterfield was one of the great architects of the Gothic revival and also designed St Ninian's Cathedral in Perth.
They also designed St David's Cathedral, Hobart, in Tasmania.
He also designed Vaduz Cathedral and St. Joseph's Cathedral in Bucharest.
In 1888, he designed St John's Cathedral in Napier.
Renwick later designed St. Patrick's Cathedral, New York and the original building of the Smithsonian Institution.
The builder was John Young, who designed St Mary's Cathedral.