Iceland: home to volcanoes, waterfalls and, apparently, Santa?

On the outskirts of an opal-mining town, these baths fed by a massive underground aquifer are a natural spa.

Sloth rehabilitation center in the jungle of Costa Rica.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

A son-and-daughter meat market, hawked by mom and dad.

This statue once earned the distinction as one of the "Three Major Disappointments of the World."

Singapore's landscaping project is home to 18 incredible Supertrees.

On Japan's Tashirojima Island, cats are king.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A monument to the man who almost killed Hitler.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This demon atop the Notre-Dame de Paris looks utterly bored.

Watch the seas clash at the place where according to Maori tradition, the spirits depart for their journey to the afterlife.

One of the world's steepest streets seems to have houses sliding down it.

Known for the tunnel that leads visitors to the water.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

A motel dedicated to Southwestern nostalgia.

A colorful sculpture of an Australian symbol patrols an otherwise ordinary traffic island.