One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

The silly symbol for an underground protest group is now scattered around the city.

An exquisite collection of fairytale conveyances that puts most car museums to shame.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

The largest tea plantation in Southeast Asia supplies gorgeous vistas alongside tea for the surrounding countries.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

Despite a fraught and controversial history this African island holds a powerful monument to the tragedy of the slave trade.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

Once housing children next to hardened criminals this historic jail once displayed Ned Kelly's skull until it was stolen.

Twice a day one of these tragic bronze mariners drowns with the tide to remember all those the sea has taken.

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

This tumultuous Icelandic lava field looks so alien European researchers want to use it as a stand-in for Mars.

This giant statue is the product of a mixture of corruption, Stalinist architecture, and North Korean manpower.

This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

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

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

This French castle is said to have once held the Holy Grail but is now a gorgeous mountaintop ruin.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.