The first successful human heart transplant is depicted through wax figures at the hospital where it the surgery took place.

A historic casino where Dostoyevsky is said to have lost it all on a single spin of the roulette wheel.

A futuristic-looking beach house built for the owner of a snack food brand.

From atop a hill at the center of Cape Town, a cannon has been signalling the time since 1806.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

A collection of objects supposedly singed by the hands of souls in purgatory.

An alchemist's "magic door" stands in the middle of a Roman park.

A memorial for public executions that dates back to the 14th century.

This plaque in one of London's oldest public hospitals commemorates the first meeting of two of Britain's most famous literary heroes: Sherlock Holmes and Dr. Watson.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

This London plaque marks the spot where David Bowie's famous alien made his debut.

This tremendous timepiece was once the largest cuckoo clock in the world.

The final resting place of the famed German pilot, the "Red Baron."

A rare water-powered funicular, it uses a huge tank of water and gravity to do its work.

After years of being casually peed on by humans, this tree is peeing back.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

This unattributed sculpture in Amsterdam is hiding in plain sight.

This castle once belonged to one of the most prominent families of medieval Carrickfergus.

This quirky collection of furniture also happens to be a public art installation.

Tragic reminders of the 1945 firebombing campaign over Tokyo still haunt this bridge.

A sad reminder of the World War II bombing stands largely unnoticed on a street corner.

The train engine is tucked under an apartment building on a quiet Tokyo street.

The only Edo-period ferry that is still in operation in Tokyo today.

One of the few surviving World War II-era air-raid shelters in Tokyo.