Where Venice's gondolas go for a tune-up.

According to tradition this is the oldest church in Venice, but its actual age is a mystery.

Perhaps the most spectacular grotto along the Algarve coastline.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

These bronze sculptures sow whimsy by hamming it up on a pedestrian mall.

This extraordinary geological oddity resembles human-made pavement.

The tallest sea cliffs on the Southern Hemisphere are a climber's worst nightmare.

This historic Australian bridge was built by convicts with giant stone spikes to prevent cattle from falling off the sides.

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

One of the first big sculptures anywhere in Australia.

You'll find the little birds tucked within the rocks of this Australian beach.

An incredible garden taking over the interior of a massive sinkhole.

One of the best beaches in the entire world.

This Bordeaux parking garage has 712 indoor spaces, and one outdoor.

The world's largest reflecting pool is just two centimeters deep.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

Small French town or alien garage?

This small chapel is built of human bones and decorated with a golden skeleton.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This semi-secret storybook hedge maze is also the oldest garden in the city.