(Photo: Leonardo Finotti)
This architectural gem is the Friedrich Bayer Bridge in São Paulo, Brazil. It's a path for pedestrians and bicyclists across a canal in front of the headquarters for the Bayer pharmaceutical company. The firm LoebCapote Arquitetura designed it.
There are two metal islands in the canal that provide support for the 90-meter long bridge. The islands have plants on them, creating the impression that they're giant lily pads. They also serve as pivot points so that the bridge can open for boat traffic.
-via Contemporist
They should just spin continuously. If you want to cross you have to have good timing.
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