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

The stunningly blue waters of these beautiful caves also have a violent past.

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

Belfast's namesake river still winds below the city center, hidden from sight.

A palatial former bank building now houses what may be the poshest art venue (and former Tesco) in Belfast.

The last Victorian market in Belfast.

These barriers stand as stark reminders of Northern Ireland's troubled past.

A museum marks and documents the site of the Titanic's launch.

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

The block of aged dairy is probably still edible after 2,300 years in a peat bog.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

One of Ireland's most infamous prisons for rebels including men, women and children.

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

The frozen treats at this Cape Town parlor are inspired by Africa's food cultures.

Haven for Cape Fur Seals, until the Ring of Death of jumping Great White Sharks arrives.

This historic observatory was established to keep shipwrecks from littering the Cape of Good Hope.

Formerly known as the Malay Quarter, Bo Kaap is a colorfully-painted suburb located in the “Mother City” of South Africa.

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

Hidden within this iconic mountain are a set of World War II bunkers once used by German forces.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.