The Immigration Museum focuses on Melbourne and Victoria’s immigration history. First opened in 1998 as a division of Museums Victoria, Immigration Museum is located at the restored Old Customs House Building on Flinders Street in Melbourne, Victoria. History The architects of Customs House were Peter Kerr, with additional input by J.J. Clark and Arthur Ebden Johnson. Constructed between 1855 and 1876, its creation was a reflection of vastly expanded trade and soaring revenue from the goldrush, resulting in one of Melbourne's grand buildings. The museum's most important space, the Long Room, is a notable piece of Renaissance Revival architecture. The site was listed in 1948 as one of the key sites for the modernisation of Melbourne. An 11 storey £750,000 Customs House office tower was proposed, however did not proceed.