
Construction of the Charles Bridge began at 5:31 AM on July 9, 1357. Enumerated, the year, day, month, hour, and minute appear: 135797531. This palindromic sequence of ascending (and descending) odd digits is carved out on the Old Town bridge tower.

Tyn Cathedral was built in the late 14th century; its roof was completed in the 1450s.

This Baroque church was built between 1732 and 1735.

“‘It’s a peculiar apparatus,’ said the Officer to the Traveler, gazing with a certain admiration at the device, with which he was, of course, thoroughly familiar.”
--Franz Kafka, In the Penal Colony

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