Query: In what building was the Melbourne Internation Exhibition of 1880 held?
Context: The decade began with the Melbourne International Exhibition in 1880, held in the large purpose-built Exhibition Building. In 1880 a telephone exchange was established and in the same year the foundations of St Paul's, were laid; in 1881 electric light was installed in the Eastern Market, and in the following year a generating station capable of supplying 2,000 incandescent lamps was in operation.