Beneath cities across Finland lies a hidden world of tunnels, shelters, and underground facilities designed for everyday life ...

Beneath many cities around the world exist large underground complexes carved into rock or excavated below street level. These spaces can include hospitals, churches, bars, storage facilities, and ...

Did you know the United States has a fascination with building downward? This video explores ten fascinating underground ...

Editor's note: Asbury Park Press staff writers produce a lot of great work. Every reporter is picking their favorite story of 2025. Here's why Tamara Walker selected this one: "Of all the wonderful ...

Even foreign guests from NATO countries were amazed by the scale. Ukrainian paratroopers have built an underground city nearly 500 meters long on the eastern outskirts of Slavyansk, which is one of ...

Editor's note: The following story was updated with new information. Want to go an adventure — underground? Then add exploring to your summer bucket list. There are so many treasures and wonders the ...