Clocktower (Myst)
From MYSTlore
A Clocktower built by Atrus on the islet next to the Myst Island. Interestingly the clock displayed a 12-hour dial, and did not work according to D'ni measures of time.
It is not known if it was built only to serve as a simple time-displaying clock, however Atrus also put a locking mechanism for the Mechanical Linking book there.
In order for the clocktower to be maintained, the islet with the clocktower was accessed by a bridge composed of gears protruding from the sea.
Spoiler warning: the following contains details about puzzles, plot, or similar. If you're not familiar with them already, continuing to read may affect your experience.
The access-gears appear when the clock is set to 2:40.
