An aircraft galley complex, comprising: a plurality of galley structures (102, 104, 106) installable in an aft portion of a passenger cabin of an aircraft, the plurality of galley structures together partially enclosing a galley workspace accessible through a central aisle, the galley workspace being 2. broader across, i.e. in a direction between a starboard side of the aircraft and a port side of the aircraft, than the central aisle when the aircraft galley complex is installed in the aircraft, the plurality of galley structures comprising a left-side galley structure extending forward along the starboard side of the aircraft and a right-side galley structure extending forward along the port side of the aircraft when the aircraft galley complex is installed in the aircraft, the left-side structure and the right-side structure being coupled to an aft galley structure which can be situated at an aft terminus of the passenger cabin, the central aisle extending forward between the left-side galley structure and the right-side galley structure, each galley structure comprising: 1) a plurality of first trolley bays, each first trolley bay capable of securing a trolley removable from the first trolley bay into the galley workspace; 2) a plurality of storage bays accessible from the galley workspace; 3) at least one substantially horizontal worksurface; and 4) at least one insert bay capable of housing a galley insert; and a lavatory complex coupled to one of the left-side galley structure and the right-side galley structure, the lavatory complex comprising: at least two adjacent lavatory units (502, 504) accessible from the passenger cabin; and a galley extension attached to at least one of the adjacent lavatory units and extending across therefrom into the central aisle, the galley extension including at least one second trolley bay capable of removably securing a trolley. a plurality of galley structures (102, 104, 106) installable in an aft portion of a passenger cabin of an aircraft, the plurality of galley structures together partially enclosing a galley workspace accessible through a central aisle, the galley workspace being 2. broader across, i.e. in a direction between a starboard side of the aircraft and a port side of the aircraft, than the central aisle when the aircraft galley complex is installed in the aircraft, the plurality of galley structures comprising a left-side galley structure extending forward along the starboard side of the aircraft and a right-side galley structure extending forward along the port side of the aircraft when the aircraft galley complex is installed in the aircraft, the left-side structure and the right-side structure being coupled to an aft galley structure which can be situated at an aft terminus of the passenger cabin, the central aisle extending forward between the left-side galley structure and the right-side galley structure, each galley structure comprising: 1) a plurality of first trolley bays, each first trolley bay capable of securing a trolley removable from the first trolley bay into the galley workspace; 2) a plurality of storage bays accessible from the galley workspace; 3) at least one substantially horizontal worksurface; and 4) at least one insert bay capable of housing a galley insert; and the plurality of galley structures comprising a left-side galley structure extending forward along the starboard side of the aircraft and a right-side galley structure extending forward along the port side of the aircraft when the aircraft galley complex is installed in the aircraft, the left-side structure and the right-side structure being coupled to an aft galley structure which can be situated at an aft terminus of the passenger cabin, the central aisle extending forward between the left-side galley structure and the right-side galley structure, each galley structure comprising: 1) a plurality of first trolley bays, each first trolley bay capable of securing a trolley removable from the first trolley bay into the galley workspace; 2) a plurality of storage bays accessible from the galley workspace; 3) at least one substantially horizontal worksurface; and 4) at least one insert bay capable of housing a galley insert; and 1) a plurality of first trolley bays, each first trolley bay capable of securing a trolley removable from the first trolley bay into the galley workspace; 2) a plurality of storage bays accessible from the galley workspace; 3) at least one substantially horizontal worksurface; and 4) at least one insert bay capable of housing a galley insert; a lavatory complex coupled to one of the left-side galley structure and the right-side galley structure, the lavatory complex comprising: at least two adjacent lavatory units (502, 504) accessible from the passenger cabin; and a galley extension attached to at least one of the adjacent lavatory units and extending across therefrom into the central aisle, the galley extension including at least one second trolley bay capable of removably securing a trolley. at least two adjacent lavatory units (502, 504) accessible from the passenger cabin; and a galley extension attached to at least one of the adjacent lavatory units and extending across therefrom into the central aisle, the galley extension including at least one second trolley bay capable of removably securing a trolley.