Perhaps the most spectacular grotto along the Algarve coastline.

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

This giant sculpture made of trash is a critique of society's wastefulness.

This now abandoned restaurant provides some of the most amazing views of Lisboa.

Nestled in the mountains of Portugal is a tiny village made almost entirely of schist.

One of the world’s longest pedestrian suspension bridges.

This oddly shaped church resembles a rocket.

Come for the bread-themed puppet show, stay for the buffet.

A ghost town at the airport is now a refuge for blue butterflies.

On the Oregon coast there is a natural hole that seems to be draining the sea.

There are eight natural springs around town, each with a slightly different taste.

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.

The longest continuous lava tube in Oregon.

A sculpture of a salmon swimming through a brick building.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

The U.S. Navy's last diesel-electric submarine rests half-submerged in the middle of Portland.

Not-so-fearsome tiny trolls live under this wooden train trestle in Portland.

This abandoned boat sits on a nude beach, is shaped like a UFO, and is covered in graffiti.

The world's last remaining store of its kind.

A trash dump made beautiful by nature's power.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

Amazing meticulous gardens of personal wood carvings, Hydrangea, Canna, and many other flowers.

A hidden subterranean installation offers a view of the sky.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.