Opening a portal to the netherworld usually requires a combination of candles, incense, and an interpretive dance based on Goodnight Moon. Skip the complex rituals with today’s Groupon to Milwaukee’s Haunted Bar, part of Shaker’s Cigar Bar. Choose between the following options:

• For $25, you get two admissions to an evening ghost tour (a $50 value).
• For $45, you get four admissions to an evening ghost tour (a $100 value).
  
  

This Groupon is not valid for Saturday matinee tours. Participants must be 18 or older and must call ahead or check in online to reserve a spot.

Located in Milwaukee’s warehouse district and housed in a former cooperage and speakeasy dating back to 1894, Shaker’s Cigar Bar adds a hauntingly historical element to an otherwise typical night out. Paranormal researchers and the proprietor himself maintain that Shaker’s bustles with otherworldly regulars. At 7 p.m. and 8:30 p.m. on Wednesday and Thursday nights and every half-hour from 6:30 p.m to 8:30 p.m. on Friday and Saturday nights, groups of 13 tour takers explore the old building—from the basement below to the former brothel—in search of spine-tingling apparitions and the friendly phantasms of former accountants. Confronting the supernatural may be hard on the nerves of some erstwhile specter seekers; fortunately, the bar-based tour allows patrons to bring a drink (not included) along for liquid courage.

Intricate 19th-century woodwork greets guests upon arrival, and a brass-topped front bar beckons un-whetted whistles and parched kazoos to belly up for a libation, such as a snifter of 132-year-old cognac paired with a natural Dominican cigar from the basement humidor. Bartenders, called “Shakers” and “Shakerettes,” also serve up period-style absinthe cocktails at the carved-oak back bar. The drinkery’s tin ceilings and tin-relief walls sigh with age as they long for new hearts, while antique stained glass and hardwood maple floors round out the time-displaced décor, transporting patrons into a bygone era.