PORTFOLIO ▲ C hicago's recently completed 150 North Riverside building includes a dramatic lobby, nearly 100 ft. tall at its peak and surrounded by a structural-glass fin-wall system to visually connect the interior and exterior. The laminated glass fins completely enclose the lobby and act as structural supports, eliminating the need for any steel or aluminum support columns. The result is a transparent, open, and inviting lobby space that allows significant natural daylight. Photo: Nick Ulivieri. Image courtesy general contractor Clark Construction Chicago (clarkconstruction.com). 66 COMMERCI A L A RCHI T EC T URE MAY MAY2017 2017 commercialarchitecturemagazine.com commercialarchitecturemagazine.comhttp://www.construction.com http://www.commercialarchitecturemagazine.com http://www.commercialarchitecturemagazine.com