Dime museums were institutions that were popular at the end of the 19th century in the United States. Designed as centers for entertainment and moral education for the working class (lowbrow), the museums were distinctly different from upper middle class cultural events (highbrow). In urban centers like New York City, where many immigrants settled, dime museums were popular and cheap entertainment. The social trend reached its peak during the Progressive Era (c. 1890–1920). Although lowbrow entertainment, they were the starting places for the careers of many notable vaudeville-era entertainers, including Harry Houdini, Lew Fields, Joe Weber, and Maggie Cline.