I Am The Ticking

Time is a brisk wind, for each hour it brings something new... but who can understand and measure its sharp breath, its mystery and its design?
~Paracelsus

The clockface on the Torre dell'Orologio
Piazza San Marco, Venice
photo by Peter J StB Green

Clock with Heads of Prophets (a 24-hour, instead of 12-hour, clock)
Santa Maria del Fiore in Florence
by Paolo Uccello, 1443

Clock in the Cathedral Notre-Dame de Strasbourg, France
photo by Didier B (Sam67fr)

Diptych sundial in the form of a lute (Diptych sundials are portable. Like pocket watches. Sort of.)
circa 1612

The Prague Astronomical Clock or Prague Orloj
photo by Maros Mraz

The Rathaus-Glockenspiel of Marienplatz, Munich
Photograph by Douglas Wacker

Clyde Clock
Glasgow, Scotland
by George Wyllie

The Wells Cathedral clock
photo by Cormullion

Links:
* How to make sundials and a sundial FAQ
* The Human Clock Several years ago, our family took a couple of photos for this. I think there's one of our dog!
* Wondering about different time zones? The World Clock: Time Zones
* The world's largest clock is in Japan
* Another cool clock: Zytglogge tower in Bern, Switzerland
* The story of Jens Olsen's world clock (here's a photo of it)

How long a minute is, depends on which side of the bathroom door you're on.
~Zall's Second Law