This massive fiberglass Gulliver turns every visitor into a Lilliputian.

Underwater art project will double as a massive artificial coral reef to help regenerate the damaged ecosystem.

The attic of a four-century-old canal house hides a clandestine church.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

Cryptic messages embedded in the New York City sidewalk.

A massive underwater sinkhole made famous by Jacques Cousteau.

The Uros people live on floating reed islands in lake Titicaca.

On this tiny spot of land in the middle of Lake Titicaca the only ones who do the knitting are the men.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

The mysterious "Candelabra of the Andes" could represent anything from a god's trident to a hallucinogenic plant.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

There must be a pun in this haystack somewhere...

Commemorating the spot where the famous scientist fed his pigeons.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Medicinal spa created with the discharge from a geothermal energy plant.

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

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

Northern Ireland's Brobdingnagian stepping stones.

This single room has survived the centuries with almost no deterioration.

A steam trawler with a whiskey-soaked history driven ashore in 1960 resides rusty but still standing on the shoreline.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.