This golf ball–shaped former desert real estate office now houses a UFO museum.

A collection of old shoes in the middle of nowhere.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

One of the best-preserved ghost towns in Arizona speaks to the difficulties of establishing mining towns in the 19th century American West.

Two small markers remember the Alamo's feline protectors.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

This hidden sculpture garden full of Wild West art is one of San Antonio's best-kept secrets.

A grove of colossal man-made flowers built to collect the sun's rays.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

Dedicated to the first Black recipient of the Navy Cross.

Home to drunken tower-climbing goats... seriously.

Elvis's own personal tropical hideaway.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

This spot along the 23.5 degree north parallel marks the northern boundary of the tropics.

Where a great scandal unfolded with a famous female revivalist at its center.

The most famous location in China was home to whole dynasties worth of imperial rulers.

Copenhagen's celebrated theme park and gardens.

Site of the first radio and telephone broadcasting companies in Copenhagen.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

Once the scene of a young boy's home in revolt, this Norwegian island is now home to the world's first "ecological" prison.

The only surviving piece of Copenhagen's 16th-century defensive wall.

The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.