Watch the full journey of creating a stunning swimming pool with a hidden underground passage! 🏊‍♂️🌿 Using only natural ...

Behind a blue door in a narrow London passage lies a little-known network of tunnels deep underground, once home to British ...

Home to the world’s longest cave system, Mammoth Cave National Park in Kentucky offers an unforgettable underground adventure. With over 400 miles explored, its vast chambers and intricate passages ...

The investigation uncovered numerous underground passages beneath the Castle, particularly in the area once occupied by the “Ghirlanda,” or outer wall. Some of these passages may be connected to ...

Researchers from the Politecnico di Milano have uncovered hidden underground passageways beneath Milan’s ... which were depicted by Leonardo da Vinci. One passage was allegedly connecting the castle ...

A later document from chronicler Anello de Oliva also discussed multiple underground passages in the city. The texts noted that, during construction in the area, workers ensured they did not ...

Researchers recently uncovered hidden structures beneath Milan's fifteenth-century Sforza Castle, including underground passages and secret walkways that were previously unknown. The findings were ...

Sforza Castle in Milan. Credit: ElinUK / CC BY-NC 2.0 Researchers at Politecnico di Milano have uncovered a network of underground passages hidden beneath Milan’s iconic Sforza Castle. Forgotten over ...

Researchers at Politecnico di Milano have uncovered a network of underground passages hidden beneath Milan’s iconic Sforza Castle. Forgotten over centuries, these structures offer new insights into ...

Some Underground services, including part of the Jubilee line, will be suspended this weekend (Picture: Zuma Press Wire/Shutterstock) If you’re travelling in London this weekend, take note of ...

But according to recent, ground-penetrating radar and laser scans, da Vinci’s references to underground tunnels aren’t myths—they’re real, and some of them may have been used to secretly ...