All Underground Ziplines and adventure tour featuring five underground ziplines, including a fun filled dual racing zip, three awesome challenge bridges that will test your skill, balance, and mettle, and a certified zip guide that will lead you on your 2.5 hour adventure into a part of 17 miles of underground passageways beneath the city of Louisville, Kentucky. (cottonwoodlouisville.com)
William J. Wilgus, the railroad company's brilliant chief engineer, oversaw the electrification of the trains and the burying of the tracks and then convinced the New York Central company to build a new state - of - the - art terminal, a great people - moving machine — a building with shop - lined underground passageways to the city's subway system and to adjacent hotels and commercial buildings. (entrepreneur.com)
Mr. Silver, who was then Assembly speaker and one of the state's most powerful politicians, envisioned not just a subway station in his district but a soaring transit hub, «the Grand Central of Downtown,» complete with an enormous glass dome and mirrors to filter sunlight into underground passageways. (nytimes.com)