The famous Beatle secretly visited this Illinois town several times to visit his sister.

More than 100 steam and diesel locomotives bring Colorado’s rail heritage to life.

Now a pedestrian bridge, this was once part of a narrow-gauge railroad that ran along the east coast of Kauai.

This monument built by Japanese American immigrants spent decades underground.

This former luxury resort in Kaua'i is now an abandoned relic.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

A once-glowing grotto at the bottom of Waikapalae Wet Cave.

A glass display case holds the document that ended the Second World War—which one person signed on the wrong line.

This ruined fort and statue are a testament to the last king of Kaua‘i’s savvy diplomacy skills, which briefly brought Russians to Hawai‘i.

This landmark of the Chicago silent film industry may not be in the picture business anymore but it still stands proudly.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

The huge collection of paintings of the American West is one of Denver's best-kept secrets.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

This impressive Boston holy house is the American mecca for Christian scientists.

An enormous, inside-out glass globe built in 1935.

Affectionately known as "Lord Bot," this historic statue has a cult social media following and rightly claims to be “the most metal inhabitant of the Wren Yard.”

Huge abstract sculptures of the Puerto Rican Flag.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

The menacing creature had a tremendous influence on the local culture before being exposed as a hoax.

The air force base preserves its scars from the Japanese attack on Pearl Harbor.