The park occupies the centre of the island, from north to south, for a distance of two miles and a half. The cross streets do not extend through it, and all vehicles of a business nature are excluded from the pleasure drives. It was foreseen from the first that it would be necessary to provide means of communication between the eastern and western sides of the island, without compelling wagons and trucks to pass around the upper or lower ends of the enclosure. At the same time it was felt to be desirable to make these roads as private as possible, so that the beauty of the park should not be marred by them, or by the long trains of wagons, carts, and such other vehicles as would pass over them. The genius of the constructing engineers soon settled this difficulty. A system of transverse roads was adopted and carried out. There are four of them, and they cross the park at Sixty-fifth, Seventy-ninth, Eighty-fifth, and Ninety-seventh streets. They are sunken considerably below the general level of the park, and are securely walled in with masonry. Vines, trees, and shrubbery are planted and carefully trained along the edges of these walls, which conceal the roads from view. The visitors, by means of archways or bridges, pass over these roads, catching but a momentary glimpse of them in some places, and in utter ignorance of them in others. Near the northeastern end of the park is an elevation known as Mount St. Vincent. It is crowned with a large rambling structure principally of wood, to which is attached a fine brick chapel. The building was originally used as a Roman Catholic Seminary for young men. It is now a restaurant, kept by private parties under the control of the Commissioners. The chapel is used as a gallery of sculpture, and contains the models of the works of the sculptor Thomas Crawford. They were presented to the city by his widow in 1860. Just below this hill is the North Lake, into which flows a stream noted for its beauty. At the Fifth and Eighth Avenue gates are the stations of the Park Omnibuses. These are controlled by the Commissioners, and transport passengers through the entire park for the sum of twenty-five cents. They are open, and afford every facility for seeing the beauties of the place. The original cost of the land included within the park was $5,028,884, and up to the close of the year 1869, there had been expended upon it an additional sum of $5,775,387; making the total cost of the park, up to January 1st, 1870, $10,804,271. Since that time it has cost about $1,000,000 additional.