The completion of the Brooklyn Bridge in 1883, the Brooklyn end of which was near Brooklyn Heights' eastern boundary, began the process of making the neighborhood more accessible from places such as Manhattan. The Interborough Rapid Transit Company (IRT)'s Lexington Avenue subway line, which reached Brooklyn Heights in 1908, was an even more powerful catalyst in the neighborhood's development. The resulting ease of transportation into the neighborhood and the perceived loss of the specialness and "quality" began to drive out the merchants and patricians who lived there; in time their mansions were divided to become apartment houses and boarding houses. Artists began to move into the neighborhood, as well as writers, and a number of large hotels – the St. George (1885), the Margaret (1889), the Bossert (1909), Leverich Towers (1928), and the Pierrepont (1928), among others – were constructed. By the beginning of the Great Depression, most of the middle class had left the area. Boarding houses had become rooming houses, and the neighborhood began to have the appearance of a slum.