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Bridges may be functional pieces of architecture, but they can also be incredible pieces of art.

This cluster highlights some of the most incredible bridges we've seen from around the world, including water-filtering bridges, bridges inspired by human handshakes, astounding architecture being erected for the London 2012 Olympics games, smog-reducing architecture and Ireland's “living” bridge.

Implications - Architectural pieces such as smog-reducing architecture and woven wood bridges can bring tourism to certain locations. If structures are extremely buzz-worthy and have a unique story to tell, people will go in an attempt to make a connection with the city itself as well as those who designed and built it. Unconventional architecture can be a great way to get tourism to any region and can be highly marketable.