Drawing of a circle with a spiral in the middle of it

3D model of a peptide molecule on a white background

Engraving of a city street with people walking and riding horses

Black alarm clock with two bells on top of it

Black and white drawing of a man standing next to a skull with wings

Portrait of a young man wearing a brown coat and a blue sash

Old map of the city of Heidelberg

Black and white drawing of a group of people in a wooded area

Drawing of a building with a clock tower in the background