Tokyo was originally known as Edo (), a kanji compound of 江 (e, "cove, inlet") and 戸 (to, "entrance, gate, door"). The name, which can be translated as "estuary", is a reference to the original settlement's location at the meeting of the Sumida River and Tokyo Bay.During the Meiji Restoration in 1868, the name of the city was changed to Tokyo (東京, from 東 tō "east", and 京 kyō