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The abandoned 

train tunnel under 
City Hall Plaza

By Heather Hopp-Bruce

Globe Staff

Photos by Jessica Rinaldi

Globe Staff

IF I WERE THE RAT KING, I’d choose the long-abandoned subway tunnel under City Hall Plaza as my secret lair. Unused since the early 1960s, this prime piece of horror real estate has it all: cavernous chambers connected by cement passageways so small a human has to duck to get through; numerous black-as-night niches and crannies to haunt; a network of rusty ceiling pipes draped in decades of dusty cobwebs; a big pile of rusted whatnot; and an overall aura of deep creepiness.

The tunnel, which was opened briefly in 2018 to a limited number of small groups of the press and the public, is estimated to be about 15 feet high, 200 feet to 300 feet long, and 30 feet to 40 feet wide.

TUNNEL LOCATION

CITY HALL

Plus location, location, location. With the privacy afforded by being a full 27 feet underneath throngs of unsuspecting tourists and local political heavyweights alike, this tunnel is just a scurry away from all the food offerings of Haymarket Station and the current MBTA tunnels via the fancy Government Center Station. 

CONGRESS STREET

City archaeologist Joseph Bagley ducked as he passed through a door leading from one section of tunnel to another.

Only an unassuming unmarked door in an underground parking garage separates this vault from the living world. Perfect.


This is not the only abandoned subterranean oddity under the City Hall Plaza. Keep reading and find out what else is underfoot ...

A door and other rusted parts were underneath a staircase to nowhere.

A municipal officer shined his light on an object in one section of the tunnel.

Cobwebs dangled from one of the many pipes.

Bagley’s shadow was cast on a door leading into the tunnel.

Watch a video of the tunnel:

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Visit site No. 1: 

Above the abandoned train tunnel

There is currently no public access to the tunnel and the entrance is securely locked. But if you stand anywhere between the beer garden on City Hall Plaza and the new Government Center MBTA station, the tunnel is directly underneath.

VIDEO BY HEATHER HOPP-BRUCE; RAT IMAGE BY BIGJOY/ADOBE

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