“It's the quality” (but probably also the drive-through donut tunnel) that has attracted diners since 1968.

The most unique castle in all of Southern California, entirely constructed from repurposed materials.

A living museum dedicated to the legendary woodworker and his soulful furniture.

Here, visitors can swing with the waves of the Pacific Ocean.

This concrete ship has had four careers - World War I tanker, floating amusement park, fishing pier, and artificial reef.

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

This historic streetcar system has been running since the 19th-century.

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

Building owners can take out tiles for free at this repository for historic building materials.

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

The stunning interior of this Gothic church is covered in ornate gold details.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

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

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

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

This tiny museum's sizable collection is jammed into a former underground public toilet.

An encyclopedic collection of mammal penises.

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

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

A restaurant devoted to "trouser grip" wrestling, an ancient form of Viking wrestling that is Iceland's national sport.

This serene oasis in an affluent Los Angeles neighborhood holds some of Gandhi's ashes and got Elvis into Eastern Philosophy.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."