The Ohio River and the hills influenced the development of Cincinnati’s neighborhoods. Visually, the skyscrapers of downtown, like Carew Tower and the PNC building toward the west, and the Proctor and Gamble towers to the east, beckon travelers. Like the saying, “All roads lead to Rome,” it does seem that all roads lead to Cincinnati — even those over the river in Northern Kentucky. Inventions of the street car and trolley inclines made living along Cincinnati’s steep hills easier and more desirable. Money, more than ethnic groups, has influenced the look of each neighborhood. The mansions in Clifton reflect its wealthy days in the late 1800s and early 1900s, while Over-the-Rhine’s row houses were working-class homes during the same time period. These days, young, urban professionals and artsy entrepreneurial types are adding their mark, turning once-stagnant neighborhoods into vibrant living, entertainment and shopping hotspots.