Fort Whoop-Up was the nickname (eventually adopted as the official name) given to a whisky trading post, originally Fort Hamilton, near what is now Lethbridge, Alberta. During the late 19th century, the post served as a centre for various illegal activities. The sale of whisky was outlawed but, due to the lack of a police force in the region at the time, many whisky traders had settled in the area and taken to charging unusually high prices for their goods.
Fort Whoop-Up is also the name of a national historic site in Indian Battle Park, home to the largest period firearm collection in Canada.
Photo: "Fortwhoopupnationalhistoricsite" by Fort Whoop Up Interpretive Society - Own work. Licensed under CC BY-SA 3.0 via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Fortwhoopupnationalhistoricsite.jpg#/media/File:Fortwhoopupnationalhistoricsite.jpg