This piece of early engineering is rather unknown despite its location in the heart of Madrid.

After the queen of Spain had a dream where these statues fell and crushed her, they were removed from the palace and given new homes around Madrid.

Browse through a century of this principality's first popular export.

This sinister Baroque entryway could lead you to a terrible fate.

At this century-old barbershop, clients used to be entertained with a glass of brandy and a cigar.

Also known as the Temple of Poseidon, this is one of the best-preserved Greek temples in the world.

The only visible remains of this ancient Greek underground temple is its roof protruding from the earth.

The Bourbon royal family had this unique octagonal hunting "cottage" built on a tiny islet in Lake Fusaro.

Italy's third-largest Roman arena gives a peek into the underground operations beneath the ancient spectacles.

A sulfuric hellscape in southern Italy.

These bronze horses on the gates of the Royal Palace of Naples were a gift from a Russian tsar.

Does this church in Naples hold the true tomb of Vlad the Impaler, the notoriously cruel figure who inspired Bram Stoker's Dracula?

This 17th-century passageway is home to numerous bookshops, a witch legend, and the oldest pizzeria in the world.

Locals pay their respects at a shrine to soccer player Diego Maradona—which claims to contain a real lock of his hair.

This sculpture pays homage to the street sweepers of Madrid since its inauguration in 2001 in Plaza Jacinto Benavente.

Inaugurated three times, this tower offers some of the best views of Madrid.

The San Marino-Rimini railroad was short-lived but this tunnel once provided shelter for hundreds of refugees during World War II.

Wander through a maze of empty tombs to find the poles used to hang revolutionary patriots.

A miniature statue of a beloved character from children's literature.

Largely overlooked, this little fountain on Museum Island is a whimsical tribute to a Prussian king nicknamed the “Fatty Flounder.”

One of the largest numismatic collections in Europe fell victim to a huge theft.

This Volcano-like rest area was designed by architect Giulio Ceppi built according to energy efficiency and ecological footprint standards.

Where members of the Crossbow Corps of San Marino demonstrate their skills.

An expansive collection of vehicles and other paraphernalia marking the history of firefighting.