In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

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

The video game-themed street art first popped up in the French city.

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

This chimerical bridge/tunnel appears to dead end right into the sea.

This antique clock once gave the most accurate time in the area.

The Lund University's former gym houses a museum focusing on the creative process of art.

The standard measure of Lagom, a measure of what is enough.

The marker that allows students all over the world to be late for class.

These ancient rune stones plucked from the countryside now call this university park home.

Home to 200 plaster casts of Scandinavian proboscises.

The indecision over what to place in this square was immortalized with a plaque.

This Swedish astronomical clock was in storage for almost a century before its glorious workings were put on display once more.

The United States Capitol's former columns still stand.

Once the supplier for noteworthy projects like the National Cathedral, this old brickworks now lies abandoned.

Art deco landmark on the outskirts of Washington, D.C.

This brick-lined pedestrian walkway was once a railway tunnel used during the Civil War.

The narrowest house in America is seven feet of pure spite.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

A former pillar of the Black community in Ellicott City.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

In 1787, a group of delegates met at this very spot to drink, be merry, and ratify the Constitution of the United States.

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.