A church of bones, decorated with 40,000 human skeletons.

Macabre astrological automaton clock dating to the late 1400s.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

The “Coin Cabinet of Dresden” houses a collection of over 300,000 numismatic artifacts, one of the largest of its kind in Europe.

The largest treasure hoard in Europe is contained in a castle that was bombed out during World War II.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

To the great disappointment of doomsdayers, this codex merely contains records of the Moon and Venus.

This riverside restaurant has been serving customers since 1146.

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

From Ancient Rome to WWII, Neupfarrplatz has over 2,000 years of history underneath its main square.

A bright little alley in La Boca is a part of tango history.

A vast necropolis where you'll find the elaborate mausoleums of Argentinian tango stars.

A tower devoted to — and modeled after — the Divine Comedy.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Breathtaking and huge 430 year old maps of Italy.

A square-domed symbol of resilience in the heart of the old Jewish Ghetto.

This is the oldest Roman-made bridge in the city still existing in its original state.

The naturally mummified body of a peasant girl saint.

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

Fortified medieval tower house with lovely roof garden.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.

An incredible mosaic-lined monument said to have held the remains of an ancient Roman empress.