Building Spotlight: Prague's Astronomical Clock

There aren't a lot of cities where one of the biggest tourist attractions is a work of science.  But historically speaking, Prague is a little more enlightened than most cities.

One of the must-sees when visiting the city is the Astronomical Clock.  This clock on the side of Prague City Hall shows the position of the sun and the moon, the current time, sunrise and sunset, ancient Czech time, the zodiac, and a dozen other functions.  Every hour, animated figures of the Apostles march around the top of the device as the hour chimes.

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