Humber Bay Arch Bridge,Toronto, 1994, Montgomery Sisam Architects & Delcan Corp (bridge engineers)

Humber Bay Arch Bridge, Toronto, Canada by Montgomery Sisam Architects and Delcan Corp bridge engineers

GATESHEAD, ENGLAND - JUNE 21: The Millennium Bridge opens as part of the opening ceremony for the European Athletics Team Championships at the Quayside on June 21, 2013 in Gateshead, England. (Photo by Stu Forster/Getty Images) via @AOL_Lifestyle Read more:

Incredible bridges from around the world

Some of these marvels of engineering curl, tilt and even breathe fire. Explore the world's strangest bridges.

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The 607 feet long and 13 feet high Lucky Knot bridge undulates in several strands and connects the banks of the Dragon King Harbour River in the Meixi Lake district.

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Image 1 of 13 from gallery of Cirkelbroen Bridge / Studio Olafur Eliasson. Photograph by Anders Sune Berg

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maximina almeida + telmo cruz overlaps orange steel bridge over highway in lisbon (Designboom)

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China's New Lucky Knot Bridge Is A Winding Wonderland