The longest fence in the world stretches over 3,000 miles to keep the dingoes out.

One man's dream has turned into this naturally growing chapel made of almost nothing but trees.

Large World War II gun emplacements and tunnel systems remain hidden near a remote end of Waiheke Island.

This incredible narrow-gauge mountain railway was created by a ceramic artist.

This bridge was designed to connect a road that never came to fruition.

This remote highway took over 50 years to build.

A network of fortifications that never saw conflict.

Celebrating the history of whiskey production during New Zealand's era of prohibition.

You may recognize this beautiful grove within Kaitoke Regional Park as location of the house of Elrond.

One of New Zealand’s few castles boasts beautiful gardens, grand architecture, and a history filled with family drama.

Watch the seas clash at the place where according to Maori tradition, the spirits depart for their journey to the afterlife.

A galaxy of glowworms—larvae of a gnat—hides deep in the belly of these caves.

A Franco-era dam flooded (almost) everyone out of this centuries-old Aragonese town.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

These steeply terraced ruins are a stop along the Inca Trail to Machu Picchu.

On the Oregon coast there is a natural hole that seems to be draining the sea.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

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

This open-air museum was originally a World War II testing ground for German missiles and rockets.

The NASA scientists behind Apollo 11 started out developing Nazi weapons at this abandoned German rocket factory.

Highly spherical boulders on the shores of New Zealand.

A desperate final message left by a POW on the run serves as a memorial for himself and the 97 that died with him.

These phallic stone spires once served as Tolkien's Paths of the Dead.

The remains of a monument in the remote Kazakhstani desert dedicated to the only men to die in outer space, the crew of the Soyuz 11 rocket.