Visitors can swim with vicious predators in Crocosaurus Cove's plastic daredevil enclosure.

Nine limestone rock stacks on Australia's "Shipwreck Coast."

An abandoned jewel of a ballroom on the top floor of Australia’s busiest rail station echoes with the sounds of a bygone era.

Alien rock formations grown from the sands of an Australian national park.

Built over an abandoned train yard, this hidden gem is full of winding paths and offers gorgeous views of Sydney Harbour.

The only pollutant in the clear blue water is sunscreen.

A small, but award-winning beach known for its literally spotless reputation.

A massive stairway that almost wasn't leads to one of Australia's most scenic vistas.

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

This old wooden funicular railway leads to a cemetery in the forest.

The entrance to this Frankfurt subway station looks like an old tram car crashed into the concrete sidewalk.

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

The largest brick bridge in the world.

Go surfing on this urban wave, "hacked" by local surfers.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

This incredible stone temple is a monument to death, victory, and fantasy architecture.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

In this truly magical place, rent hasn't been raised since the year 1520.

The prototype for all Nazi concentration camps.

This historic stone bridge has an entire neighborhood clinging to its sides.