Scientist Pete Kelsey and his team have 3D-mapped the entire island of Alcatraz, discovering Civil War secrets, prisoner escape routes – and looking at ways to preserve the island for the future.

The altar stands in the courtyard of what was once a wealthy, influential person’s home in Tikal. At just over 1 meter tall, ...

The alerts, updated by the U.S. State Department as of April 7, classify destinations from Level 1 ("Exercise Normal Precautions") to Level 4 ("Do Not Travel"), with warnings often tied to issues such ...

Here's how we did it. First, you have to get from Lima to Cusco. It’s a one-hour flight but driving there takes 20 hours, according to my iPhone map. We flew. Cusco, elevation 11,000 feet-plus, ...

Here we go through the things that surprise tourists when they visit Cuzco and Machu Picchu, Peru. Tourist information on Cuzco and Machu Picchu, Peru. Filmed in Cuzco, Peru Join this channel to ...