Frankfurt Ostendstraße station is an underground S-Bahn station in central Frankfurt am Main, Germany. The station was opened when the City Tunnel was extended to Frankfurt South station in 1990. It consists of two tracks, surrounding a central platform.Its entrance escalators are located next to the Hanauer Landstraße. The site of the future headquarters of the European Central Bank is nearby.The train station is served by S-Bahn lines S1, S2, S3, S4, S5, S6, S8 and S9.