Videos

Over 5000 years ago, Neolithic people constructed the Newgrange tomb where on winter solstice sunlight travels a passage to the central burial chamber Newgrange is part of a series of monuments built along a bend of River Boyne, collectively known as Brú na Bóinne.

Architecture of the Pantheon

In 150 AD Roman architects build the Pantheon with an incredible dome of concrete, styled with an oculus - a hole - at the very top. The oculus allows a beam of sunlight to illuminate the interior. What were the secrets of light for Caesar Augustus?

Time - Stonehenge and Sundials

Telling time is one of civilization's oldest arts using stone alignments to see the rising sun and following its shadows through the day and seasons.

1-Founding Fathers - George Washington

George Washington - Stars and Bars for DC and a dial for Mt. Vernon

2-Founding Fathers - Benjamin Franklin

Benjamin Franklin - Rising Sun and a Modest Proposal

3-Founding Fathers - Thomas Jefferson

Thomas Jefferson - A True Sundial Designer

al Shatir Replica

The Ibn al Shatir sundial sits in the Great Mosque of Damascus, a place it has held since 1371 AD. Now a replica sundial is proposed for Observatory Park in Virginia. This astronomical center intends to have replicas of many famous and historic sundials for public educatio

Adler Sundial Conservation

The Adler Planetarium has one of the largest sundial collections in the world. Here old dials are cleaned and restored. This is a patient art. Learn how it's done.

Historic Ingleside Terrace Sundial

A Housing Developer Creates a Historic San Francisco Sundial in a Horse Track

Ivory Sundial Discovered at Jamestown

During a recent archaeological excavation at historic Jamestown, a 17th century Ivory Diptych Sundial is discovered near an old cellar. Analysis of the sundial using Serle's ruler shows that the dial has a latitude of 51 degrees, the same as London, England. The early settlers of Jamestown brought their timepieces with them to the New Wolrd.