They have long been the subject of legends and speculation. Now, it is confirmed that they truly exist. A dozen secret tunnels have been discovered beneath the Sforza Castle in Milan. Scientists ...

Renaissance artist and inventor Leonardo da Vinci drew a series of underground tunnels said to be hidden underneath Milan's ...

Behind the tall wall on Porchester Terrace is a view of a London underground tunnel that passes through where the houses should be. This clever illusion makes 23-24 Leinster Gardens one of the UK’s ...

Denver’s weed church, zodiac predictions for the Year of the Snake, plus what promises to be London’s most ambitious – and ...