Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

Visiting dignitaries and Hollywood stars once stayed at this 1920s hotel, alongside ghosts that are said to haunt its corridors.

Since the 1700s, this old barrel has acted as a post box that relies on the kindness of travelers.

Quito's historic, main square dates back to the 16th century.

Considered by many to be one of the most dangerous highways in Alaska.

This mile marker stands at the unofficial end of a highway built to defend the United States from a Japanese invasion during World War II.

This World War II-era bunker is now packed with posters and props from movies and TV shows filmed nearby.

A unique set of caves that spits waves back out into the ocean.

A 1940's shrine dedicated to drowned fishermen on the outskirts of Honolulu.

An authentic replica of an Asian temple and garden hidden amongst the natural beauty of Hawai'i.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

Watch the newest land on the planet form before your eyes.

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Regency-era excess on the English Coast.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

Used as an example in one of the first dictionary entries for "museum" in 1706.

One of Europe's oldest libraries.

Hidden in plain sight, this creepy sculpture watches from above.

An abandoned lighthouse awaits its destiny: being buried under shifting sand.

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

The small alleys in Lübeck's Old Town are a result of medieval urban sprawl.