Sundials

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

This Chinese-style quartz sundial was saved in its final hour.

Constructed thousands of years ago, these stone circles offer incredible insight into the lives of the people who built them.

A one-of-a-kind sundial at the Very Large Array honors a radio astronomy pioneer, incorporating the original piers from his breakthrough radio telescope.

On Hilton Head Island this bronze King of the Sea rules all things briny—and lets you know if you’re late for lunch.

During the solar phenomenon "Lahaina Noon" this bendy, curvy sculpture forms a perfectly circular shadow on the ground.

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

A sharply wedged sundial marks the point at which each day in the United States begins.

A promotional sun clock on the site of San Francisco's great raceway.

A surrealist timepiece by the artist of melting clocks.

The world's second-largest sundial, made entirely out of stone.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

The only free-standing, vertical sundial in the US was keeping standard time before it was even invented.

The first official clock in North America, it kept time for the Spanish government of Santo Domingo.

This collection of solar timekeepers includes the world's first digital sundial.

Modern sundial uses ancient methods to tell time and date perfectly.