The phone booths in this English town have distinctly milky hues.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

A winding district gerrymandered into the shape of a mantis.

Site of the first hot air balloon flight conducted by the first English balloonist.

This slice of 1960s Danish modernism does not conform to the Oxford college stereotypes.

This nondescript building was the birthplace of Morris cars.

An amazing example of early-20th-century architecture, this church features marble transported from Utah.

On the Fourth of July this area will transform into a Pompeii-like storm of falling embers and ash.

An overlooked tribute to one of the most important peace deals in American history.

The spot where Oxford garnered its name was also home to a medieval philosopher and includes a house covered in statues.

The oldest house in Washington, D.C. wasn't originally constructed in the nation's capital.

The university library shaped like a giant piece of Swiss cheese.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

These unusual rooms on wheels are holdovers from the 1960s.

Formerly the most gerrymandered district in the U.S., it twisted and turned along racial borders.

This statue of the "father of television" stands prominently in the United States Capitol.

Looking strangely like Rome's Colosseum, this unfinished tower has dominated the skyline for over 100 years.

One of the largest collections of Catalan literature and cultural materials outside of Spain, created by a community of 1960s expats.

This Underground station has been a popular filming location for decades, even before it closed.

A museum of co-operativism housed in the birthplace of the modern movement.

Nassau Hall has served as army barracks, a museum, and played a key role in the American Revolution.

A tribute to the beloved, kind-hearted "homeless mayor" of Silver Spring.

World's largest working waterwheel has been around for over 150 years.

The tunnel under the Capitol Building where Congress takes out its trash.