Jens Olsen (Danish locksmith and (I believe largely self-taught) watchmaker designed and (partially, as he died before it was complete) designed what is to me t

Jens Olsen (Danish locksmith and (I believe largely self-taught) watchmaker designed and (partially, as he died before it was complete) designed what is to me the most impressive mechanical clock in existence today - Jens Olsens Verdensur, housed in the lobby of the Copenhagen town hall. It keeps track of several astronomical events, easter &c - and is, as mechanical clocks go, allegedly the most accurate clock in existence. It will only have completed its largest cycle sometime around the year 27000AD - as long as someone sticks around to wind it weekly and perform maintenance, that is. Not quite the same philosophy behind it as the Long Now - but amazing engineering porn nonetheless, and definitely recommended to drop by if you ever find yourself anywhere near Copenhagen. Brief video showing it in action: https://www.youtube.com/watch?v=n2CtSWchTIs https://www.youtube.com/watch?v=n2CtSWchTIs