After a nearly successful attempt on Hitler's life, the conspirators met their fate in the courtyard of this Berlin building.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The most visited, and possibly most controversial, museum in Germany.

A small island abbey is the final resting place of many medieval Scottish monarchs, including the real Macbeth.

There are plenty of wonderful panoramic vistas in Edinburgh, but not many are hidden smack in the middle of the Old Town.

The heads of two giant mythological water horses honor Scotland's horselord past.

A book bound in the skin of an infamous criminal, along with countless other specimens.

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

Accessible only at low tide, the deserted island is dotted with World War II ruins.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

A 18th century graveyard and its astonishing cortege of macabre iconography.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

The fountain marks the area where hundreds of accused witches were burned at the stake.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

This splendid mosaic embodies ancient Rome's fascination with the exotic allure of Egypt.

The city of Palestrina was built around this magnificent terraced sanctuary dedicated to the pagan goddess Fortuna.

Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

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

An 18th century fountain and two columns are all that remains of Rome's forgotten river harbor.