The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

Planned as the world’s first zero-carbon city, it had lofty ideals—but is only 5 percent completed and aiming for 50 percent carbon-neutral.

Walk in the footsteps of the gods and straddle two tectonic plates.

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

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

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

Where the "World Pinball Champion” is crowned.

This stunning concert hall has become a symbol of Iceland's national recovery.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

This quaint Spanish village agreed to be painted blue as a marketing stunt but found that they preferred it that way.

The once highest point in China blends symbolic design with a kick of adrenaline.

Largest island in the Baltic Sea experiences such idyllic weather that roses bloom in the middle of December.

Now an entertainment complex, the Lingotto building was once an avant-garde auto factory with a test track on the roof.

Stay overnight in the world's most sleekly designed rabbit hole, free of charge.

It might not be the prettiest pyramid in Egypt, but it may be the muddiest.

This dangerous-looking suspension bridge may have been too unstable to remain open.

This amazing pedestrian suspension bridge in the Swiss Alps would give Indiana Jones nightmares.

This wooden hotel is a temple to German sustainability and forest conservation.

Built by crowdsourcing, this wooden foot bridge saved a part of Rotterdam that was languishing in wait of city funding.

Futuristic apartment blocks are the backdrop for Montreal surfers hangin' ten on the Habitat '67 standing wave.

A stairway to heaven, or to nowhere at all.

A museum dedicated to a Cold War era sausage.

What happens here stays here – unless it affects the whole world.

This stunning mass of ice spans 121 square miles and is still growing.