Tags: Restaurant.
The Red Onion is a restaurant located on East Cooper Avenue in Aspen Colorado United States. It is the oldest restaurant in the city housed in a three-story red brick Italianate building dating to the late 19th century. In 1987 it was listed on the National Register of Historic Places as New Brick–The Brick Saloon along with other historic properties in the city.It began as a saloon opened by an early city alderman; at one point its upper floors were reportedly home to a brothel.