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- Marks of the Floor Surface of the Old Cathedral
- Atrium Wall of the Old Cathedral
- Excavation of the Gothic Cathedral
- Baptismal
- Burials in the Entrance Hall of the Old Cathedral
- View into the North Axis of the Old Cathedral
- Floor in the Entrance Hall of the Old Cathedral
- Arch Foundation
- Arch Foundation
- Semi-Circular Passage like on the Plan of St. Gall
- Entrance into a Crypt from the Baroque Period
- Emundus Grave
- Foundation of the Western Apse, Old Cathedral
- Foundation of the Old Cathedral
- Foundation of a Pillar
- Section of Foundation, Gothic South Tower
- Foundations of the Choir Pillars, Gothic Cathedral
- Foundations of the Gothic Pillars
- Foundation Walls of Entrance Hall, Old Cathedral
- Heating System, Roman House under the Cathedral
- Cobbled Construction Street, Gothic Period
- Bell-Founding Pit
- Gothic Pillar Foundation
- Gothic Pillar Foundation
- Gothic Pillar Foundation
- Gothic Pillar Foundation
- Gothic Pillar Foundation
- Walls of the Crypt of the Old Cathedral
- Medieval Burials
- Modern Cement Ceiling
- Reconstruction of the Boy's and the Women's Grave
- Remains of the Old Cathedral
- Threshold of the Old Cathedral
- Late Antique Construction
- Late Roman Well, Merovingian Rests, Old Cathedral
- Baptismal Font from the Cologne Baptistery
- Divisional Wall between the Old and New Cathedral
- Tower Foundation of the Old Cathedral
- Filling Layers of Bell-Founding Pit
- Wall of a Roman House (Earliest Buildings)
- Gate of the Gothic Construction Site with Hinges
- Water Drain of a Roman Street
- Western End of the Old Cathedral
- Western Foundation of the Old Cathedral
