When this 18th-century observatory's meridian was moved, it set Sweden's time back by 0.04 seconds.

The library's graceful rotunda is like a bibliophile's temple.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

A statue honors the children who fought Nazis in Poland.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

This gravestone and its inscription inspired a movement that has spanned generations and saved countless lives.

This silent sentry in the crypt below a large Gothic cathedral is often knee-deep in water.

This cathedral's stained-glass patchwork of psychedelic colors and shapes was put in place long before the swinging 60s.

This is Britain's one and only clock concealed in the pavement.

At just 51 feet and 10 inches long, it's the shortest street in England.

A replica of the steam engine that hauled Queen Victoria's Royal Train is on display at Windsor.

An enormous steel waterfall is a nod to the substance that shaped Britain's Steel City.

This police call box harkens back to an era of pre-radio communications, and has a rather unique feature.

The once-a-day siren is a reminder of the days before time was standardized.

This Sheffield sculpture composed of 17,000 Allen keys honors both urban falcons and a furniture icon.

A tribute to the women who quietly kept the local steelworks alive during both world wars.

A rare example of this century-old British tank stands near the center of town in Ashford.

The home studio one of Britain's first independent record producers is also the site of a murder-suicide.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.