North Dakota’s capital city of Bismarck had quite the reputation during the Prohibition era. The oldest restaurant in the state, Peacock Alley, is located there and there are many legends that during the 1920s, secret tunnels underneath the restaurant were used to smuggle in alcohol for secret speakeasies. Obviously those days are long gone and Prohibition was repealed, but that’s not to say this city isn’t still hiding some secrets…

Located at 510 E Main Avenue, Bismarck, North Dakota, is the delicious Humpback Sally's restaurant... and some secrets.
Google maps
Humpback Sally's is known for being a small plates tavern, serving many small selections of delicious, unique food.
Humpback Sally's/Facebook
But there are secrets in Humpback Sally's that may take a little searching around to find. Through a few specific doors, some of which are quite cleverly hidden, you'll find 510.2.
Humpback Sally's/Facebook

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510.2 is a hidden speakeasy within the 510 building. It has a unique, 1920s-esque atmosphere and guests are encouraged to dress for the part.
Humpback Sally's/Facebook
510.2 has many amazing cocktails and drinks that will make any typical bar seem boring.
Emily Eddy/Google
Though they aren't smuggling the liquor in by secret tunnel anymore, it still tastes amazing and fun.
Humpback Sally's/Facebook
You never know what you might find behind the secret doors at 510, but you'll be more than glad when you find 510.2. There's no other place in North Dakota like it!
Humpback Sally's/Facebook

You can find more information of Humpback Sally’s and 510.2 by visiting their website.

These hidden gems aren’t behind secret doors, but if you’re looking for lesser-known restaurants in North Dakota, you’ll definitely want to check out this list of the best of the best.

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