Shepard Fairey's artwork at Navy Pier

Shepard Fairey, the artist best known for his Barack Obama "Hope" poster in 2008, is leaving his mark near Chicago's lakefront.

As part of the Navy Pier Walk 2011 art exhibition, Fairey has created a giant poster mural for the Lake Shore Drive viaduct at Grand Avenue. Measuring 130 by 10 feet, the "Obey" mural features a string of album-coverlike works. It is Fairey's first such installation in Chicago and will remain at the site through October.