Per Eileen of Speak Coffee to Me, this awesome* video of a projection on the Prague Orloj, an “astronomical clock tower.” “The 600 Years” refers to the number of years since the clock was first built — years which pass by as you watch the video:

It’s the handiwork of a project known as The Macula, “dealing with the relationship between image, sound and audience.” If you follow that link to their site, be sure to nose around some to view more of their other work… including similar projection-on-buildings pieces.

The logistical problems they had to solve to make this overwhelm my brain. Just getting the perspective right had to be a matter of a lot of experimentation and calculation.

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* The word is here no cliche.