"These days, wandering the Lower East Side (the area between the Bowery and the East River, with Houston Street marking its northern border and Canal Street its southern one), it can feel impossible to recall that this neighborhood was once among the city's most overcrowded, teeming with immigrants. Its streets were filled with Germans, Greeks, Hungarians, Poles, Slovaks, and other Europeans newly arrived in the United States, including a significant Jewish population. Today, boutiques and bars cater to gentrifiers, much of the population is Puerto Rican or Dominican, and the few traces of that earlier era are hard to find—the facades of Yiddish theaters and synagogues that have long since closed. The Tenement Museum on Orchard Street is dedicated to assuring that period of the city's past is not lost forever. On each floor of the restored tenement building, the lives of some of its former occupants are brought to life, from the German saloon owners on the first floor to the Jewish immigrants who occupied the top one. Docents in character and costume help to make the stories of those immigrants personal. The museum also organizes walking tours of the Lower East Side and offers talks on the district's history."