This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

Louise Bourgeois' 30-foot-tall steel spider sculpture.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

Few other hotels can rival the grandeur of the Castle in the Rockies.

One of two side-by-side totem pole parks dedicated to educating visitors on Tlingit history and culture.

The king of U.S. high points towers over every other peak on the continent.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

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

Scattered throughout London are ancient remnants of the city's former bounding wall.

Hear the quietest sound from across the dome.

Museum celebrating the history of computers, especially their role in codebreaking.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

One of Europe's oldest libraries.

Famously misunderstood wonder of the ancient world

These picturesque ruins crumble beautifully into the ocean.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

An ancient iron pillar in Delhi that seems to be rustproof.

Largest graveyard in all of Japan surrounds a famous mausoleum.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

The world's only complete colossal squid specimen is on display at the Te Papa Museum.

Huge winged monument in the United Kingdom.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".