Geometry and mystery come together in an epic show of octagonal masonry.

Southern Italy's spinning top village.

Skulls and skeletons are omnipresent in this church dedicated to souls trapped in purgatory.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

Over several decades, one of London’s most iconic city gates was dismantled, moved out of the city, and then moved back.

A team of concrete athletes stands in the middle of a traffic circle.

A Milanese café entirely designed by the American director Wes Anderson.

The world's first and only museum dedicated to dachshunds.

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

The anatomical-pathological collection of a man who changed surgery.

Soon after its unveiling, this giant inverted globe sparked controversy and was vandalized.

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.

One of America's founding fathers lived in this London lodging between 1757 and 1775.

The last Tsar of Russia constructed this private church just so he could attend services when visiting his wife's hometown.

This splendid tomb may look fantastic, but there's nothing in it...

This medieval castle was reconstructed by Carlo Scarpa.

One of the tallest bell towers in Italy plays a particular melody at just two times each day.

The oldest botanical garden in the world that technically isn't the oldest.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

Where Venice's gondolas go for a tune-up.

Two stone columns flank the grand Venice square, but there were supposed to be three.

One of the oldest remaining Catholic churches in England is home to the hand of a 7th-century saint.

London’s first road overpass is so old that it was originally built for horse-drawn carriages.

This coffee shop lies hidden beneath a historic church.