Qatar's oldest market can trace its origins back more than a century.

The building is a gigantic piece of art inspired by the shape of a desert rose.

An abstract monument to a symphonic composer.

A subterranean house of worship carved right out of the bedrock.

A 250-year-old timepiece-automaton adorned with golden mechanical birds, which still sing to this day.

This curious, round temple is the oldest still-standing marble building in Rome.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

A stunning two-story timepiece within a medieval Brick Gothic church.

A massive tribute to Estonian history and culture.

This fortress was built using the last surviving stones from the Lighthouse of Alexandria, one of the Seven Wonders of the Ancient World.

The lost library of Alexandria, revived as a spearhead of cultural preservation.

The medieval center of the Islamic world was also once the seat of Saladin's sultanate.

Standing atop 2nd-century Roman ruins, this church is one of the oldest and most iconic in Old Cairo.

Egyptian treasure trove of fossils documenting the whale's transition from land mammal to sea creature.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

Giant aluminum tusks erected over the main thoroughfare to commemorate a visit by Queen Elizabeth II.

The memorial honors the lives of rhinoceroses killed by poachers.

Get tall with nature's lankiest beasts and their warthog friends at this Kenyan preserve.

This colonial fort is an intriguing example of Renaissance military architecture.

This group of sculptures includes the first statue of a female politician in London.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

A former groundskeeper’s cottage, now famous for being the main location of a hit British comedy game show.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.