A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

This unique sculpture is often overlooked by pedestrians.

A Stockholm metro station is home to an escalator that is not only the longest in Sweden, but among the longest in the world.

Small Easter eggs are hidden in the ventilation holes of the city's newest trains.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

Stockholm's narrowest alley is barely over two feet wide.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

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

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

Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

A sea cave with a waterfall and Viking past

This ruined travelers shelter sits abandoned in a desolate bog of Flow Country.

The sign marks one of the endpoints to mainland Britain's longest overland travel route.

From here, the loch appears to take the shape of mainland Scotland.

A pair of mosaics marks the spot where the last accused witch of Dundee was put to death.

People leave coins atop an unusual grave marker in one of Scotland's oldest burial grounds.

A bronze tribute to the wildly popular video game from the '90s.

The U.K.'s first underground railway line is now a lively thoroughfare for runners and cyclists.

This city square dates back to the Scottish Enlightenment and was home to some of Scotland's brightest minds.

A sculpture dedicated to the Roman history steeped in a Scottish town.

A small literary museum remembers the life and works of the author of The Thirty-Nine Steps.