Iconic red and white plaques show the creative names invented to navigate the city streets.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

Volcanically heated hot springs.

Hidden deep in the Guatemalan jungle is a turquoise paradise of natural pools, caves, and waterfalls.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

A King Kong-like gorilla hangs from the top of this commercial building in Tokyo.

A more chill but no less fascinating version of the famous ancient archeological site.

An ancient capital city that dates back 3,000 years and harbors many surprises.

These ancient sunken lanes were naturally tunneled into the soft ground by countless footsteps.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

The world's oldest map of the holy land gives us a fragmented glimpse of the layout of biblical nations.

Gladiators battle and chariots race daily in the ruins of a once-great Roman city.

This exceptionally well-preserved ancient marvel also houses a small museum dedicated to Jordanian folk tradition.

A neglected bell tower in modern Colombo is a symbol of the city's colonial past.

Eat the ultimate iteration of Portugal's most beloved pastry.

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

This site was once the religious, cultural, and trade center of Sri Lanka.

An asymmetrically spiraling tower perched on top of a protected mountain.

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.

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

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

Seven beautiful 1,000-year-old rock-cut Buddhist statues.

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

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