A forest of phallic offerings found in a quiet corner of a hotel car park.

A small museum in the Golden Triangle tells the story of the opium drug trade that gripped Northern Thailand.

The glowing blue Nymphaeum of Emperor Tiberius.

Hidden in an Italian forest is a completely homemade amusement park that has taken a lifetime to create.

Architectural monsters are devouring this palace's every door and window.

The middle finger of modernity.

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

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

The plague quarantine island home to the alleged "Vampire of Venice."

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

Abandoned medieval hill town.

A collection of objects supposedly singed by the hands of souls in purgatory.

This colossal ancient sculpture of the monstrous Aztec rain god has a literally stormy history.

66,000 pieces of art, donated by one of the world's richest men.

The famous artist couple lived and worked here, in two different houses separated by a bridge.

A colorful "forest" made entirely from three tons of recycled plastic waste.

This laboratory has a remarkable concrete roof that measures less than an inch at its thickest point.

Discarded animal sculptures stand forgotten by an abandoned aquarium and water park in Bosque de Chapultepec.

This tiny, tucked-away eatery reflects the history of Mexico's Lebanese immigrants.

These unusual paintings give thanks to the saints and deities who granted people favors and miracles.

This "City of Books" holds a museum, library, and the complete personal book collections of five of Mexico's greatest thinkers.