Underground

The immense drill that's burrowing a subway tunnel beneath New York City will remain underground after its work is through, a move to cut the expensive costs of removing it.

Sidewalks in Holland have for years utilized piped-in waste heat to melt snow. Now, they've added an additional sidewalk amenity: a hearth.

The city of Helsinki has developed a master plan for its burgeoning underground city.

Construction is nearing completion on the longest railway tunnel in the world.

A new video features urban explorer Steve Duncan as he adventures in the abandoned subway tunnels beneath New York City.

Officials in Finland are building a nuclear waster storage facility that is designed to last for at least 100,000 years.

A six month trial will bring Wi-Fi Internet access into test locations within the London tube system, part of an effort by the city to bring Internet access to the entire system in time for the 2012 Summer Olympics.

103 artists form around the world have unveiled a massive collection of murals in New York City. But they're underground in abandoned subways stations, and you can't go see them.

The Atlantic guides a tour through the underground business zone of SubTropolis, a 5-million-square-foot complex 100 feet below Kansas City, Missouri.

The winner of the SHIFTboston Ideas Competition is a proposal to turn the unused Tremont Street Subway tunnel under Boston Common into a network of underground cultural venues.

An underground trolley station in Washington D.C. that later had a turn as a short-lived underground food court is being eyed by local artists as a possible site for a new underground cultural center and art space.

This video from The Boston Globe takes a look into the world below the city's subway system.

A group of historians and urban enthusiasts have developed a successful tourist organization that explores the underground structures and spaces of Berlin.

Triple Canopy translates a Chinese interview with Shu Yu, one of the world's foremost underground urban planners. He talks about the potential of underground space for urban habitation.

A community of hundreds of people live beneath the glitz of the Las Vegas Strip in flood control tunnels.

A man who has been leading tours of abandoned underground railroads in New York City is hoping to gain permission to break through a 19th century brick wall below the streets to find a perfectly preserved locomotive from the mid-1800s.

London's underground subway system recently banned the consumption of alcoholic beverages, and to celebrate the last night of drunken train commuting, Londoners converged on trains to get hammered. They also got rowdy, assaulted and arrested.