Astronomical Clock, Münster Cathedral, Germany

Check out the Astronomical Clock on the Senior Travel Blog. About.com's Guide to Senior Travel, Nancy Parode, snapped this photograph at Münster Cathedral, Germany.

Designed to calculate Easter, the famous Astronomical Clock was built in 1540-43. It was a team effort: printer Theodor Tzwyvel and Franciscan friar Johannes Aquensis conducted the astronomical calculations; wrought-iron craftsman Nikolaus Windemaker handled the metalwork; Ludger tom Ring was the painter; and Johann Brabender most likely sculpted the figures.

Nancy says it was designed to be accurate until 2070 A.D.

You can read more about it here.