Architectural archway structures for aircraft. The archway structure can be positioned individually, or in pairs or other sets along the length of the interior of an aircraft, such as a commercial passenger airplane. The archways extend across the ceiling of the interior of the cabin and extend downwardly to a point adjacent the luggage bins. End caps are provided to conform the end of the archways with the interior luggage bins. The invention provides a unique "look and feel" and architectural configuration, and does not result in seat loss.