Swiftly moving sunlight

This architectural style would involve using static mirrors to concentrate and reflect sunlight in a way that lets the light move swiftly across and around walls just from the natural movement of the sun.

For a basic example imagine sunlight shining directly down a long hall, onto the wall. Because of the angle a slight turn of the earth creates a significantly greater movement of the light playing on the wall.

Of course this isn't one of the actual possible styles: For the light to be concentrated enough to be easily visible and yet at a sufficiently oblique angle to move swiftly down the hall it would have to be bright enough to cause rapid sunburn. But clever use of mirrors, archways, windows, passages, and crystals can let the sun move quickly down the hall without burning anything.

For another example imagine the morning sun shining at a steep angle against the ground. Shadows move much more quickly in the morning.