Boston
Mariel Underground
Permanently closedTop 40 · Throwbacks
Mariel Underground has permanently closed. Explore other great clubs in Boston.
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A Cuban-inspired underground club tucked beneath the Mariel restaurant inside a former bank building at 10 Post Office Square in Boston's Financial District. The subterranean room leaned into the "underground" label literally — low ceilings, plush seating, and a design sensibility meant to evoke Havana glamour. Bottle service and dress code enforcement gave it an upscale-lounge feel more than a raw club, and the crowd skewed well-dressed professionals on Thursday through Saturday nights.
Closed permanently on May 31, 2026 after six years, with the space converting to a new concept. When it was open, expect a tight door, mandatory reservations for the underground level, and bottle service as the primary seating route. Thursdays through Saturdays only; cover varied by night. The music ran Latin-leaning with house and hip-hop mixed in, and the sax-over-DJ setup was a real differentiator from a standard club night.
Mariel Underground has a fashionable dress policy that encourages guests to look their best without being too strict. While there’s no official dress code, it’s important to wear clean, trendy outfits that match the upscale vibe of the club. The doorman decides who can enter, so dressing nicely will help make sure you get in smoothly
To get into Mariel Underground, guests must be at least 21 years old. This age rule ensures that the crowd is made up of adults who are there to have a good time in a mature, lively setting. Whether you’re celebrating something special or just going out with friends, you’ll be in good company
Mariel Underground has a fashionable dress policy that encourages guests to look their best without being too strict. While there’s no official dress code, it’s important to wear clean, trendy outfits that match the upscale vibe of the club…
To get into Mariel Underground, guests must be at least 21 years old. This age rule ensures that the crowd is made up of adults who are there to have a good time in a mature, lively setting.
Mariel Underground typically has no cover, though this can change for special events.
Request the free Nightspotters guestlist with your name, date and party size. We submit it to the venue and confirm by text or email.
Top 40 · Throwbacks.
Nightspotters is not directly affiliated with the venues listed and acts as a service provider — sharing information and submitting your booking requests on your behalf. Hours, dress code and policies can change; confirm with the venue for your night.
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