How do you get into Speakeasy Fifty50?
We have not confirmed it. Speakeasy Fifty50 is in the directory because it calls itself a speakeasy, and that is the whole of what we can stand behind about its door.
The drinks at Speakeasy Fifty50
How the venue describes itself: “Experience unique dining at Haas House Food group, featuring the Secret Supper Club and Speakeasy Fifty50 for unforgettable culinary adventures.” (from its own website, retrieved 9 October 2026)
Beyond what the venue publishes we have not verified a list, so what follows is the period rather than the bar: Bronx, Monkey Gland, and Hanky Panky are all drinks of this era, and each links to its origin and its build.
The building
Documented — Speakeasy Fifty50 occupies the First Congregational Church, a property listed on the National Register of Historic Places under reference number 85001359. The listing is a federal record maintained by the National Park Service, and the nomination document is the primary source for the building’s architectural and social history.
National Register reference 85001359 · NPS nomination document
Where Speakeasy Fifty50 sits
Speakeasy Fifty50 is in Platteville, Wisconsin, in Grant County, in the Midwest of the United States.
This is currently the only verified hidden bar our directory lists in Platteville. If you know another, tell us.
Wisconsin holds 44 listed venues in this directory. See them all on our Wisconsin speakeasy guide.
Prohibition in Wisconsin
Wisconsin came under national prohibition on 17 January 1920, when the Eighteenth Amendment took effect and the Volstead Act defined an intoxicating beverage as anything above one half of one per cent alcohol — a threshold strict enough to close breweries that had expected to survive.
More on the period in our history of Prohibition in Wisconsin.
What the newspapers recorded in Wisconsin
Searching the Library of Congress run of Wisconsin newspapers for speakeasy, blind pig and bootlegger across 1920 to 1933 returns dated pages anyone can open. These are from Wisconsin:
- The Telegraph-courier, November 4, 1920 — read the page at the Library of Congress
- The Milwaukee leader, July 26, 1921 — read the page at the Library of Congress
- Grant County herald, December 14, 1921 — read the page at the Library of Congress
- The Milwaukee leader, November 11, 1920 — read the page at the Library of Congress
Planning a visit
You can reach Speakeasy Fifty50 by phone on (608) 299-1528, through its own website, and on Facebook and Instagram.
The address is 140 Market St, Platteville, WI 53818. Open in Google Maps.
What we have confirmed
For Speakeasy Fifty50 we hold street address, telephone number, official website, social accounts, and a listed-building record. We do not yet hold opening hours, a published drinks list, or an online booking link.
It is in the directory because its own name calls it a speakeasy.
Overture Maps carries this venue; OpenStreetMap has no matching record.
The source data classifies the premises as a restaurant.