Gastown is the original settlement that became the core of the creation of Vancouver, British Columbia, Canada. Currently, it is a national historic site and a neighbourhood in the northwest end of Downtown Eastside, adjacent to Downtown Vancouver.Its historical boundaries were the waterfront , Columbia Street, Hastings Street, and Cambie Street, which were the borders of the 1870 townsite survey, the proper name and postal address of which was Granville, B.I. . The official boundary does not include most of Hastings Street except for the Woodward’s and Dominion Buildings, and stretches east past Columbia St., to the laneway running parallel to the west side of Main Street.

More details: https://en.wikipedia.org/wiki/Gastown