In the summer, the area around this sculpture transforms into a vibrant concert venue.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

A self-funded cemetery with a long list of inhabitants.

Come for the flowers, stay for the bats!

A collaboration of art and ornithology mourns the calls of Sydney's lost birds.

Secret North Korean passage discovered below the world's most dangerous border.

After a profound show of devotion for his master, a dog becomes the symbol of loyalty for an entire nation.

A serene space tucked amid the skyscrapers of Hong Kong's bustling financial district.

A colossal floating restaurant built to look like a ancient Chinese imperial palace.

A station built to repel pirates now attracts wealthy vacationers.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Elevated freight railway turned wildly successful urban park.

The only castle in North America to ever house European sovereigns.

66,000 pieces of art, donated by one of the world's richest men.

For centuries, Jeddah’s old town was a major trading port and a point of entry for Hajj pilgrims traveling by sea.

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.

A 19th-century fortress and collection of artifacts offer a tour of Saudi history.

The abandoned club hides in the hills of Ibiza.

Originally slated to become a luxurious resort, this structure is now a graffiti haunt reclaimed by nature.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.