Freak Alley is a notable venue for public art in the form of murals and graffiti located in and adjacent to a service alley in downtown Boise, Idaho. The largest outdoor gallery in the Northwest, and a Boise institution since 2002, it began with a painting of a single alley doorway and now extends from the alley itself to a gravel parking lot. Extant murals painted over and replaced by new murals (or incorporated into them) every two years; collectively it is the work of more than 200 artists. It has featured prominently in a survey of ten mid-sized American cities with thriving artistic communities in which Boise ranked second. The site, along with the back of the Union Block, received a $500,000 renovation in 2018 from the city.
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- Gross, Josh (2012-08-12). "Slideshow: Freak Alley Gallery Debuts 76 New Murals | Cobweb". Boiseweekly.com. Retrieved 2014-02-27.
- Ross, Winston (2018-03-25). "Freak Alley". Newsweek. Retrieved 2018-03-26.
- Webb, Anna (2017-09-13). "Will half a million dollars improve these 2 Downtown alleys, or wreck their cool factor?". Idaho Statesman. Retrieved 2017-09-13.