Hidden high on a remote mountain peak is a humbling and mysterious Vietnam War memorial.

Two small markers remember the Alamo's feline protectors.

This gnarled old tree supposedly sprouted from seeds kept in the pocket of a 16th-century Spanish sailor.

A bike train runs along a disused railway line through the tranquil French countryside.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

Why walk on this historical site when you can zoom down instead?

The world's only flying boat museum honors a small Irish village that sent 20th-century aviation to new heights.

With the Wild Bunch hunted almost to extinction and the law closing in on him, Butch Cassidy fled to this remote cabin in Argentina.

This graveyard contains markers and monuments dedicated to some of the darkest chapters in Washington's history.

Once in disrepair, this popular Texas stop along iconic Route 66 has been restored to its past glory.

The Netherlands is home to a bridge printed out of reinforced concrete.

The small family-run business has kept alive the fading art of creating beautiful handmade book covers.

The remains of a doomed Antarctic plane, buried beneath layers of ice and snow, await those willing to do a bit of digging.

Mirrored floors and arched shelves create the illusion of an infinite tunnel of books.

This North Carolina store preserves a historic moment in America's movement for racial equality.

A tribute to the intrepid explorer and his crew who perished in terrible conditions on an ill-fated expedition to the Arctic.

A mysterious ancient network of thousands of perfectly straight lines stretching across miles of Bolivian desert.

The remarkably well-preserved final resting place of a powerful ancient Thracian king.

A tribute to an iconic act of defiance from the Croatian War of Independence involving a small car.

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

This romantic, decaying 13th-century ruin on the edge of Sherwood Forest is reputedly one of England's most haunted places.

The young Black revolutionary was killed before getting to see a non-segregated pool in his hometown.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.