On the side of the Slope Park is a great park called Prospect Park, on the way to which there is a great triumphal arch in Roman style. About the history of the arch, you are more beautiful in the development of the Vіkіpedіya, but I still recommend poaching. Tse other arch, yaku I bach at life. And the Persha is at Washington square in Manhattan. If you are interested in such architecture, I also recommend visiting Washington square.