Lavatory Monument Assembly

A lavatory monument assembly configured to be positioned in the interior of an aircraft that includes a first wall and a second wall that are generally parallel to one another, and the second wall is longer than the first wall. The lavatory monument assembly further includes a third wall and a fourth wall, and the third wall and the fourth wall generally are perpendicular to the first wall and the second wall, and the third wall and the fourth wall connect to the first wall and the second wall to form a lavatory interior. The first portion of the fourth wall generally is parallel to the third wall, and a second portion of the fourth wall angles inwardly along generally straight lines into the lavatory interior, such that the area in the lavatory interior proximate the first wall is less than the area proximate the second wall. The lavatory monument assembly farther includes a toilet in the lavatory interior proximate the first wall, and it further includes a door positioned on one of the first, second, third, or fourth walls.