extent - the distance or area or volume over which something extends; "the vast extent of the desert"; "an orchard of considerable extent"

river - a large natural stream of water (larger than a creek); "the river was navigable for 50 miles"

direction - the spatial relation between something and the course along which it points or moves; "he checked the direction and velocity of the wind"

front - the side that is seen or that goes first

frontispiece - an ornamental facade