A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

An eerie, derelict amusement park in Berlin.

When a massive landslide hit one of the world's tallest dams it created a tragic environmental disaster.

This artistic temple brings together multiple architecture styles, but is only an example of one.

The home of a neoclassical master is now a shrine to his chosen art style.

The incorrupt tongue of the patron saint of lost things is venerated in this basilica.

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

Pilgrimage site for star-crossed lovers.

This winding road through an Italian canyon may be the most scenic drive in the world.

The skulls and bones of thousands of soldiers line the walls of this small Italian chapel.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

A military museum, art park, mausoleum, and architectural oddity all on one fascist's estate.

The highest waterfall in Italy is only "turned on" five times a year.

Natural cathedral designed by Italian artist Giuliano Mauri.

A medieval fresco which reminds visitors that death will come for us all.