The patron saint of spinsters grasps a container of dried blood.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Two thousand artifacts from around the world collected by one woman who loved to travel.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

An unusual round church in London with a Templar past.

The barrel-made lookout from Shackleton's final ship is tucked away in the crypt of one of London's oldest churches.

A small marionette collection located within the dark cellars of an 11th-century Austrian castle.

Baroque celebration of the end of the Great Plague of Vienna.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

The final resting place for the remains of 143 Habsburg royalty.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

Fortified medieval tower house with lovely roof garden.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

The site of Austria's biggest concentration camp now honors its victims.

The watery grave of an impractical idea.

A contemporary fresco movement illustrates the region's rich history.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Hidden away in the city of Madison, Wisconsin is a nearly forgotten home that Frank Lloyd Wright built for a childhood friend.