Omnibuses were originally horse-drawn public carriages, the first of which was established by George Shillibeer in 1829. They were initially also known as Shillibeer's and later on as 'buses. The era of the horse-drawn omnibus finally came to a close in 1911, after which the service was motorised.
Hyde Park Corner is located in the West End of London, between Hyde Park and Green Park. Piccadilly is the street that leads east from Hyde Park Corner, along the north side of Green Park.