From a passageway made by giant sloths to a slinky tunnel bridge and an 'entrance to hell' - there are some extraordinary ...
Hidden in the mountains of South Africa, this 149-year-old tunnel is a historic relic of the past waiting to be rediscovered. Built in 1876, the Hex River Tunnel is believed to be South Africa's ...
Chinkana, meaning labyrinth, is an archaeological site beneath the city of Cusco in Peru, which was the capital of the Incan ...
What if Cincinnati's old subway tunnels became an underground food ... including parking and an entrance. A project cost estimate wasn't included. Platt Architecture + Design conceptualized ...
The Rhondda tunnel in Wales may become the largest cycling and walking tunnel in Europe some 55 years after it shut - with ...
Almost as soon as the rails were pulled up in 1942, bats moved into the old railroad tunnel just south of Fredericksburg on Old San Antonio Road. Millions of bats make the tunnel their home in the ...