Amgen Helix Bridge

Modeled after the underlying structure of DNA, this pedestrian bridge is a pathway to Amgen’s massive waterfront campus, and a symbol of Seattle’s biotech dreams. The California biotech giant obtained the property — once owned by the Port of Seattle — as part of its $16 billion acquisition of Immunex in 2001.

Architecture critic Sheri Olson called the $10 million bridge “one of the most stunning recent architectural additions to Seattle.”

Location: Elliott Ave. W. and W. Prospect Street

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(Chas Redmond photo via Flickr.)