Colorful and chaotic stacked hotel in North Holland.

Historical marker that is a mini replica of the original in New York.

A historic office and commercial building located in the heart of downtown San Francisco.

Stand inside the dark interior of an historic redwood tree that once was used as a general's headquarters.

Behold the uncanny sight of the Golden Arches—rendered in black.

A former Latvian headquarters of the brutal KGB secret police is now open as a grim reminder of their atrocities.

Rest stops along this pathway offer some of the best views of the Acropolis of Athens.

26 Chinese banyan trees cling dramatically to a stone wall, overhanging the street below.

A museum celebrating mola textiles, the intricate art of the Guna people of Panama.

An improbable creek near Death Valley, not far from the oldest surviving Euro-American structure in the Mojave Desert.

A tunnel commissioned by ‘the Intruder King’ to escape from the palace if there were problems.

One of the most colorful free outdoor attractions in San Diego, this park is filled with murals and ties to history.

An imperial fortress city that incorporated cultural elements from the entire Mughal empire, only to be abandoned the year it was finished.

Dedicated to the life of a brave woman soldier.

On the grounds of the famous Qutab Minar lies another unfinished tower meant to be twice as tall.

This cupola was once seen as an architectural disaster.

This beautiful 16th-century necropolis marks an astonishing feat in heritage conservation.

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

A favorite haunt of Delhi's politicos and intellectuals, this old-school coffee shop was shut down under Indira Gandhi's Emergency.

An ancient iron pillar in Delhi that seems to be rustproof.

Delhi's oldest Christian cemetery is also said to be one of the most haunted in the region.

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

The cascade created by Taipei’s rush-hour traffic has become one of the city’s quirkiest photo spots.

The site of Mexico’s last civilian execution is now a museum dedicated to regional history.