Royal Observatory. Park Row
SE10 9NF, Greenwich - London. England
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https://www.rmg.co.uk/royal-observatory/attractions/camera-obscura

The Royal Observatory, Greenwich, houses a public camera obscura in a small summerhouse on the Observatory courtyard next to Flamsteed House.

John Flamsteed, the First Astronomer Royal, also had a camera obscura in the same building which he used to make safe observations of the sun.

There have been a number of camera obscuras at Greenwich, dating from the late 17th century till the mid-19th century. The current camera obscura was installed in 1994.