Northern Ireland's Brobdingnagian stepping stones.

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

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

Huge winged monument in the United Kingdom.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

The largest greenhouse in the world is home to over one million types of plants.

An 18th century wonder of the world, lost in WWII, re-created at the Catherine Palace.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

Known for the tunnel that leads visitors to the water.

A glacier pocked with ice caves and surrounded by rainforests.

Tubing through a cave lit with glowworms is a magical underground experience.

A fortified city, home to a remaining population of five families

World's largest film studio, where visitors tour the decaying sets that litter the harsh desert environment.

One of the most spectacular canyons in the world.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

The only museum with its curator—and her pets—buried inside.

The small peaceful island off the Venice tourist circuit is where the city began more than 1,500 years ago.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

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

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

The Guardian of Tallinn.

An abstract monument to a symphonic composer.

A subterranean house of worship carved right out of the bedrock.