Join MailOnline Travel as we delve deep below the surface to look at some of the world's most spectacular underground ...

Rome is in the midst of a major uplift with billions of euros pouring in from a European Union pandemic recovery fund just as the Vatican City celebrates a jubilee.

Watch out for that bat behind you,” warned Luca Messina, a civil engineer who moonlights as a speleo-archaeologist with ...

The Bali Urban Subway is a rapid transit system being built in Indonesia. It will be 18.3 miles long and have a top speed of 62 miles per hour.

Honestly, it makes sense that Singapore put into action strict but effective ideas like that decades before anyone else," ...