The oldest church in the Estonian capital is home to over 100 fantastical cemetery coats-of-arms.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

Inside this museum, visitors venture through ghost stories entrenched in Icelandic folklore.

It houses the remains of a 17th-century version of the Titanic.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

Stockholm's deepest subway station is also a stunning ecological wonder.

Various forms of phallic art decorate this hill in commemoration of legendary local tragedy.

This innocuous-seeming building is actually the remnant of a major wartime brothel.

This massive library holds what was once the largest book collection in the world.

BDSM, 1930s Style.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

The oldest continuously operating pharmacy in Europe.

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

World's largest cave was only discovered in 1991, and now offers tours to the public.

This French cemetery houses some of the most exquisite examples of funerary art in Mexico City.

Explore the atmospheric ruins of an abandoned convent in the dense forests of Mexico's first national park.

Known as the birthplace of Korean Buddhism, this temple features an ancient, five-story stone pagoda.

About as hidden as can be, this specialty coffee shop is wedged between multi-story buildings at the end of a dark, skinny alleyway in Seoul.

This lesser known Hearst estate is a fairytale village built from the stolen bones of historic European buildings.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

A marvel of technology a century ago, this disused power station now offers a lovely glimpse into the industrial design of the past.

300 years of pharmaceutical history on display.

Time stands still at this serene burial ground in the center of Budapest.