This ancient city of Incas cascades down steep walls on each side of the mountain, with terraced steps that disappear over cliff edges into the valley below.
The site was built by the Khmers in the 12th century, and the architecture is nothing less than stunning.
The site has an intriguing mix of excavated and unexcavated temples in varying shapes, sizes, and states of decay, with some buildings taking on a mystical appearance as they're swallowed up by trees and roots.
Many people come to Peru for the sole purpose of visiting Machu Picchu, and the journey to the ruins can be an adventure in and of itself, depending on how travelers choose to reach the site.
Adventurous souls can opt for a guided, multi-day hike and camping trip along the famous Inca Trail to reach the site, or choose the easier option of accessing the ruins by bus from the small town of Aguas Calientes at the base of the hill, which most visitors get to by train from Cusco or the Sacred Valley.
Today, these giant monuments are the sole surviving member of the Seven Wonders of the Ancient World.
Thousands of ancient temples and stupas stretch endlessly across the landscape at Bagan, where the silhouette of the temple spires against the sky in the early morning or late day is a magical sight.
The pyramids were built as tombs for the Pharaohs, the largest of which was constructed between 25 BC.
To put their age in perspective, they were already more than 2,600 years old when the Colosseum in Rome was being built.
They also range in size and level of sophistication, creating an intriguing mix of structures that make visitors want to keep exploring the site.