Arches Buildings, structures, etc 3 Monuments 3 Architecture, Roman 2 Gateway Arch (Saint Louis, Mo.) 2 History 2 Sculpture, Roman 2 more ... Triumphal arches 2 Antiquities, Roman 1 Arch of Constantine (Rome, Italy) 1 Arch of Titus (Rome, Italy) 1 Architecture 1 Art, Roman 1 Building, Iron and steel 1 Buildings 1 Classical antiquities 1 Columns 1 Description and travel 1 Design and construction 1 Engineering design 1 Relief (Sculpture) 1 Stone carving 1 Temples, Roman 1 Themes, motives 1 less ...