When the Heatherwick Rolling Bridge is in its horizontal position, there’s nothing remotely strange about it, just another steel and wood-made bridge in London. But that all changes when it curves up until its two ends touch, to let boats pass. When curled, Heatherwick Bridge resembles an old watermill wheel.

Heatherwick Studio’s Rolling Bridge opens every Friday at noon but if the winds exceed 30 mph, the hidraulics may be unable to handle them, so the bridge doesn’t open.