I travel with Adrian Beasley and Paul Sanders of Lightandland to Prague in November 2019. It's a black and white workshop but I cheat a bit and I don't mind. Nice city, Prague, lots of history and good food, popular with tourists though, even in November. We walk miles and take trams.

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We stop by the Prague Astronomical Clock, a medieval astronomical clock first installed in 1410, making it the third-oldest astronomical clock in the world and the oldest clock still operating.

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The TESLA stained glass wall is also worth a mention. It is located at a shopping gallery off Vaclavské Námestí, the Svetozor Arcade, and dates from 1947 by Ludvik Kysela and Jan Jarolim with the Tesla sign by Frantisek Hudecek.