29th century BC in architecture
See also: 30th century BC in architecture, other events of the 29th century BC, and the timeline of architecture.
Buildings and structures
Buildings
gollark: For example, a 100mW laser is going to be dimmer than a 1W LED lightbulb in total, but is very coherent → bad.
gollark: It matters how it's focused.
gollark: Not true.
gollark: This is in fact true. They have properties like high, er, monochromaticity too, but it's essentially just coherent light.
gollark: Shining bright or coherent things into eyes makes me nervous.
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