The architectural harmony of the World's Columbian Exposition of 1893 continued to affect Philadelphia architecture until World War I. Here, Trumbauer provided the robber baron Widener family with an office building that directly confronted the city hall (
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), while responding to the design and proportions of Daniel Burnham's Wanamaker store (
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) across the street. For nearly four generations, Philadelphia-based jewelry store Caldwell's occupied the prime Chestnut Street front; its Trumbauer-designed store has been adapted as a restaurant.