On a small Puerto Rican island, banks of secret naval bunkers lie abandoned and filled with piles of office equipment.

One of Auckland's oldest cemeteries was partially demolished during the construction of a major highway in the 1960s. 

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

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

Hindu temple of the dead home to hundreds of long-tailed macaques.

This black shoreline is made up of exploded lava particles.

A Montreal deli that was so beloved that it was allowed to circumvent their laws of language.

Despite many attempts to finish this overpass, it has been abandoned since the 1970s.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Remnants of the most densely packed city in world history, that thrived on anarchy for 30 years.

A New Zealand couple's shell-adorned home living room, now on display at the Canterbury Museum.

The bones of this aquatic dinosaur turned to opal over the centuries and the beast's remains were almost sold as jewelry.

Brisbane's manmade urban beach has enough water to fill five Olympic-sized swimming pools.

This demon atop the Notre-Dame de Paris looks utterly bored.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

Three hundred years of preserved Spanish colonial history in San Antonio.

A National Historic Landmark with a scenic clock tower and park filled with deer and peacocks, plus a military museum.

A wall of chewing gum moonlights as collective art.

Few other hotels can rival the grandeur of the Castle in the Rockies.

As if T-rex wasn't big enough, this Canadian monument is four times larger than the real thing.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.