Traces

Contexts have changed since its construction; geopolitical, societal, ... It's functioning is changing. This results in many matters being absent from the building: past lives, practices, objects, instruments. But traces of them can be found. Holes, lay-outs, stories, scratches. A listing of traces and what they refer to.

• Bedrock squares in basement -> placement of seismograph (correct this please:-) )
• Slits in domes with rolling shutters -> where telescopes where looking through roof
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