Walk along the medieval fortifications that have been protecting Tallinn since the 14th century.

Several ancient rock paintings can be found on the hills surrounding the Daramombe High School.

These naturally balancing rocks were pictured on every Zimbabwean banknote, up to the 100 trillion-dollar note.

Single runway interrupted by a busy road that cuts across its middle.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Eighty million natural history specimens call this gargantuan museum home.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Home to one of the tallest church spires in Europe, this historic church once played host to King Henry VIII and Anne Boleyn.

A giant roundabout made up of six smaller roundabouts can befuddle the uninitiated.

Cycle, walk, or run up and down on an old historic railway path.

Once the largest unsupported dome in the world, beating out the Pantheon and St Peters in Rome.

A strange Georgian folly sits atop a lonely hill.

You can climb to the top of the column built to honor the "father of British inland navigation."

Ancient artists in the middle of nowhere.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

A sobering account of the vibrant multicultural neighborhood that was destroyed under apartheid.

This African beach is home to thousands of rare mainland penguins that are known for their annoying voice.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

Macabre astrological automaton clock dating to the late 1400s.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.