(Not to be confused with Jewelers Building (1882).) 35 East Wacker, also known as the Jewelers' Building, is a 40-story 159.4 m (523 ft) historic building in the Loop community area of Chicago, Illinois, United States, located at the intersections of Wabash Avenue, and facing the Chicago River. It was built from 1925 to 1927, and was co-designed by Joachim G. Giaver and Frederick P. Dinkelberg. It was once considered to be the tallest building in the world outside of New York City. Formerly the Pure Oil Building and North American Life Insurance Building, 35 East Wacker was listed in 1978 as a contributing property to the Michigan–Wacker Historic District on the National Register of Historic Places, and was designated a Chicago Landmark on February 9, 1994.