Within the Saudi Arabian desert lies a 2,000-year-old ghost town made of stone and mud.

An unfinished tomb carved into a giant boulder in the Arabian Desert.

These towering cliffs jut dramatically from the middle of a barren desert.

These ornate arches show how the course of the River Thames has changed.

This ancient Egyptian obelisk still bears the wounds of World War I.

On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.

This futuristic building is yet another architectural wonder in Dubai.

This mesmerizing architectural wonder will take your breath away with its unusual color patterns.

Why is there a vintage Rolls Royce in this Buddhist temple?

The first and only planetarium in Sri Lanka.

This sacred fig tree with a link to the Buddha is one of the oldest human-planted trees in the world.

This peaceful, round shrine in the middle of the Sri Lankan jungle acts as a beacon of peace.

This fort dates back to 1588 and was colonized by the Portuguese, Dutch, and English and sits prominently on the Indian Ocean where azure water lap the coast.

Known as the most scenic route in Sri Lanka, this train line is steeped in history and offers an unparalleled view of the country.

This elaborate temple was built around one of the Buddha's teeth.

This ancient cave temple complex is the largest and best-preserved temple complex in Sri Lanka.

An ancient stone fortress considered by many to be the eighth wonder of the world.

Why a column on the entrance is inscribed with a verse from the Quran is one of Sicily's many mysteries.

A mysterious, hidden cluster of Buddha sculptures carved into the rocks.

See how paper is made the old-fashioned way.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

What happens when you cross a mayor and a painter?