Not every city has an Anarchism section on its Wikipedia page, but this one does.

Eugene has a tradition of eco-anarchism (true story from a friend in Berkeley: "oh yea, all my eco-anarchist friends would say 'ohh, I can't wait till I go to Eugeeene."), but all sorts can be found.

Supposedly Jim Torrey (mayor of Eugene in 1999 when WTO activism was in full swing) called Eugene the "anarchist capital of the United States." [source] It looks like this has morphed into some series and some less-than-serious proclamations that Eugene is the anarchist capital of the world.

In lieu of more information here (please add more information!), here are a few articles about anarchism in Eugene:

• 2013-11-25: "Appreciating anarchism in Eugene" Daily Emerald
• 2006-10-09: "The new anarchists" Seattle Weekly
• 2001-08-07: "For Oregon town, brie and anarchy" Baltimore Sun

• 2000-03-12: "Eugene: Where Alternate Realities Go to Live" The Seattle Times