Sundials

This modest monument marks the only point of intersection between longitude and latitude in the Grand Duchy of Luxembourg.

An enigmatic concrete structure in a lakeside Toronto park raises more questions than answers.

Each solstice, students and astronomy enthusiasts gather at a primitive but functioning sun wheel to witness how humanity first used this calendar.

A massive line that stretches across the floor of Bologna’s largest church was created by a 17th-century scientist to measure the movements of the Sun.

An ingenious way to immortalize the inventor of universal time.

This municipal sundial has been keeping time along Tacoma's Commencement Bay since 1978.

Once disputed as the largest sundial in the world.

Designed to honor all those that work as nurses around the globe.

A series of increasingly larger sundials have grown with this school.

The world's largest sundial can cast a shadow more than 1,600 feet long.

A unique outdoor timepiece at a "clothing-optional" resort.

This sundial indicates the time based on where you stand within it.

This 18th-century sundial was designed to calculate the date of Easter each year.

This museum inside a museum tells the story of London's timepieces.

An ancient octagonal weather station named for the eight Greek gods of wind.

Stand at the center of this lakefront sundial, and you'll become part of the timepiece.