Peek inside Howard Hughes' garage at this Hollywood-themed art installation.

This watchtower once presided over the Berlin Wall.

An ode to South Dakota's state fish.

Scrap material from around Eritrea finds a new life at this outdoor market, where upcycling is a lifestyle.

Admire dozens of life-size animals made from old scrap metal, nuts, screws, and valves.

Located more than 600 feet beneath sea level, this tunnel boasts the world's first undersea roundabout.

In the 1940s, Italian architect Mario Cavallè built a dozen of these round homes in northern Milan.

Invented in the mid-19th century, this machine could send copied images via telegraph lines.

This magnificent arch is all that remains of a former smelt mill.

This tiny garden was built specifically to provide a place of peace and serenity away from the busy city streets.

These narrow stone granaries have been used to store and dry out grain for hundreds of years.

Built more as a work of art than living quarters, this cottage has withstood the test of time.

Many miles south of Loch Ness, a similarly-named sea monster stands at the center of a roundabout.

Entire apothecaries are on display at this Lisbon museum, which explores the history of medicine.

A bridge that has seen many reiterations over its lifetime.

A massive stone fox oversees a Rotterdam elementary school crosswalk.

An 18th-century hideout became a permanent and ongoing residence for one Lesotho tribe.

Banished from town, this local jester concocted a clever return.

Once the tallest building in Chisinau, this unique tower is a relic of Soviet architecture.

Just off the road outside Baguio, a gigantic lion's head carved into a mountain greets those driving by.

One of the last remaining venues on the Old Chitlin’ Circuit is a kaleidoscopic music hall at the end of a dirt road.

An ancient cave system in Tennessee’s Appalachian foothills converted to a 1,200-person music venue.

A cheeky alleyway window hosts tiny rotating exhibits with outsized charm.

In Edwin Hubble's hometown, a scale model of the groundbreaking telescope that was named in his honor.