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It is an unusual traffic circle created by Piet Hein, a Danish poet and scientist, in the 1960s. The shape is between a rectangle and a circle.

A glass column was later added...picture at http://www.vad1.com/photo/stock/n40-2.html

It was named after 18th century sculptor Johan Tobias Sergel, whose workshop was once located north of the square.

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16y ago

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