The walls and streets of the ancient city are peppered with penises.

Erotic art covers the walls of the largest ancient pleasure palace.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

A hugely vast Irish landscape of barren rock that stretches for miles.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

The ancient tomb acts as a calendar that keeps perfect time.

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.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

A fascinating little museum all about the rich history of Peru’s famous plant.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Prayers and messages of hope decorate the ceramic tiles of this pavilion.

A wonderfully curated used bookstore in an airport.

A remnant of the last Ice Age, this lake is surrounded by fascinating rock formations.

Hidden in magnificent rolling countryside, see what may be the largest modern stone circle in the world at Wisconsin's very own "Stonehenge”

A restaurant and lodge in northern Wisconsin which served as a clandestine hideout for John Dillinger and featured one of the most famous botched FBI raids in history.

A bypass decorated with large wooden troll carvings.

Whimsical sculptures dot a woodland path surrounding their creator's old summer cottage.

The highest point in Wisconsin is capped by two towers that are not as mythic as Tolkien's but provide much better views.

Over thousands of years, this slot canyon was carved out of the bed of an ancient lake.

A tribute to the twin ideals of religion and patriotism, built by a Catholic priest from rocks, glass, and innumerable found items.