The largest known Ancient Egyptian obelisk.

A preserved oasis with traditional Andalusian-style architecture and beautiful views of the Nile.

In Egypt's expanding metro area, many of the neighbors are dead.

Known as the Sistine Chapel of Egypt, this tomb houses some of the most well-preserved paintings in Egypt.

A massive work of modern art that appears to be a crop circle in the middle of the desert.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

One of the most well-preserved temples of ancient Egypt.

A quirky bookstore hidden beneath a sea of whitewashed Greek villas.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

This Costa Rican chapel is the most metal church in the world, literally.

The sister plane of the C-123 shot down during the Iran-Contra Affair has found a new purpose in retirement.

An unassuming tomb houses an important milestone in Indian architectural history.

Also known as the "Red Taj Mahal."

The roof of one of the world’s largest spice markets provides a grand view over the neighborhood's glorious bustle.

This ruined relic of the medieval city of Jahanpanah is a quiet oasis in the middle of New Delhi.

Many Hindus make the long pilgrimage to this holy city to have their remains burned on the banks of the Ganges River.

Ancient traditions and surreal birdwatching come into sharp relief along one of the world's most polluted rivers.

This small cafe aims to empower acid attack victims and stop violence against women in India.

The mysterious empty cupola behind the monumental arch points to an ancient prophecy of Delhi.

The beautiful 16th-century stepwell lies in the shadow of a famous fortress.

This opulent 16th-century Maharaja’s palace is a unique mix of Hindu and Muslim designs.

Known as the leaning temple, the sacred structure has somehow developed a severe nine-degree slant.

Temples adorned with intricate, erotic sculptures make up one of the "seven wonders" of India.