In April 2013, New Yorkers celebrated the 100th anniversary of the opening of the Woolworth Building. Often hailed as the first major modern skyscraper, the 792-foot-tall building wasn’t the only structure reaching new heights in that era. Several American cities embarked on a skyscraper-building binge in the late 19th and early 20th century, as advances in building techniques, ambitious architects and eager business and civic leaders spurred construction in New York, Chicago and other major cities. Here are 10 historic skyscrapers from that period, all more than 100 years old, and all noteworthy in some regard. At the very least, they’ve all survived the wrecking ball, where some much more famous buildings from their era met a sad fate.