Discover the truth behind the world's strangest architectural mysteries, from the underground city of Derinkuyu and the Egyptian pyramids to Canada's mother-in-law doors.

You can't ride all the way to Machu Picchu but this trek through the Sacred Valley of the Incas puts you close. Here's what ...

The town's layout and architecture are a mix of ancient Inca, 1500s Spain and a touch of modern times, with jaw-dropping Inca terraces and buildings rising up over 100 feet above the town.

Of course, there are countless other countries—each with its own distinct flavor—just waiting to be discovered. Consider ...

These are the 25 countries which are home to the most significant cultural, historical and natural sites, according to UNESCO.

This ancient site was the center of the Minoan civilization, known for its advanced architecture and cultural achievements. Featuring intricate corridors, vibrant frescoes, and storied ruins ...

These are big claims, no doubt. They challenge both mainstream science and much of the comfortable theology we’ve settled ...