The present invention discloses a vessel for culturing cells which includes: a bottom, a top, a tubular neck, and, one or more shelves. The first shelf adjoins the top with the first shelf being located intermediate the bottom and the top. The bottom, the top and the one or more shelves collectively define an enclosed volume for culturing cells with the enclosed volume being accessible by the opening in the tubular neck. Advantageously, this vessel provides high volume cell culture in a manner that increases efficiency and reduces the cost of culturing cells.