"The site is under construction" is a sign that could greet visitors peering through the fence at the southeast corner of the White House, trying to catch a glimpse of where the East Wing once stood. Instead, those are the words greeting visitors to the websites of several companies working on building the White House ballroom.

Two people have been killed in an explosion at an underground mine in western New South Wales in the early hours of Tuesday morning.

A uburn, New York, was Harriet Tubman’s chosen home. There are ongoing efforts to keep her work and legacy alive, specifically annually with International Underground Railroad Month, which takes place every September.

Officials say thousands of unhoused Angelenos are finding shelter below the city’s streets — creating what some call an underground city.

Two people are dead and a third has been hospitalised following an underground mine explosion in western NSW believed to be caused by a “catastrophic failure”.

Three cave explorers were rescued after being reported missing after entering a cave in North Yorkshire, England, on Oct. 2, the Upper Wharfedale Fell Rescue Association (UWFRA) said in a news release.

China has in recent years arrested and detained Christian leaders of underground churches, who are not registered with the government and under its control.

A mosquito that was believed to have evolved in the London Underground is actually of ancient Mediterranean origin, genetic data revealed.

This Halloween, watch the original “Night of the Living Dead” — but first survive an artist’s “Corridor of Horror.”

Everyone visiting American cities spends their days looking up at high-rises or strolling through street-level delights. That makes sense—the world above knows how to get noticed. But below the sidewalks and pavement of some of the nation’s most crowded urban areas is a completely different tale.

In our roundup of travel stories this week: the seven-foot “monster” that stalked West Virginia, the Roman tunnel where a hated emperor nearly met his end, and the enormous bunker city built by Nazis in central Europe.