sentences:  The Brooklyn City Railroad opened the line, a branch of their Fulton Street Line, to the city line on July 14, 1860, and to Vernon Avenue in Flatbush about a week later.The Vernon Avenue Depot was built on the east side of the line at the terminal.The line was later extended to Bergen Beach along Flatbush Avenue and Avenue N, and later still the line along Flatbush Avenue was extended to Avenue U in Marine Park; the older route became the Bergen Beach Shuttle.