This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

A collection of beautiful crystals shaped like freshly plucked roses.

This blowhole is supposedly caused by a trapped monster.

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

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

Submerged lava formations create incredible waterworks.

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

Don't be fooled by this fake medieval facade even if it is almost 300 years old.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

The island residents are known for taking their quirky sense of humor with them to the grave.

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.”

Not truly a ship nor a building, the Navy's first and last "landship" is now abandoned due to clerical issues.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

The 16th-century church was kept in its ruined state as a reminder of the casualties of World War I.

Travel through the hidden underbelly of the city in colorful tunnels filled with art and history exhibits.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Famously misunderstood wonder of the ancient world

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

The fairy tale castle of the "fairy-tale king."