Eat a Nobel banquet from any year in the basement of Stockholm's City Hall.

A 12th-century church that houses a dark creature.

The signatures of esteemed colleagues of the physicists who stopped by to attend lectures.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

One of the largest refracting telescopes in the world, and the first built specifically for studying astrophysics.

The world’s narrowest house makes for an awkward, four-foot-wide living space.

A statue of the heroic plumber stands outside a company that bluffed its way into being Nintendo's Scandinavian distributor.

Solar observatory doubles as a daring display of Expressionist architecture, much to Einstein's chagrin.

A six-story, asymmetrical tower filled to the brim with scientific experiments.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

Metro station with a claim to rock n' roll fame.

An impressive collection of massive radio satellites.

A massive explosion that leveled hundreds of buildings in the city of Leiden is remembered by a waterside plaque.

This historic Dutch newspaper building is covered with media-themed details—and one unrelated oddity.

This 17th-century "unicorn" was cobbled together from the skull of a rhinoceros, the legs of a mammoth, and the horn of a narwhal.

An unassuming rod in the Netherlands was once the old standard unit of length for the entire Dutch empire.

What many consider the original prime meridian and westernmost point of the old world.

Iron Age grave stones and Viking burials, a short drive from Gothenburg.

Controversy surrounded the creation of this anti-fascist statue.

Dedicated to a song so popular the request to "Play Shoreline" became part of Swedish culture.

A 200-year-old collection of medical paraphernalia in a historic house.

The charming storybook building now houses a small police museum.

One of the world's few mounted blue whales, its jaws are hinged open allowing visitors to descend into a lounge.