Black and white drawing of a man standing in front of a building with…

Black and white drawing of trees in the woods

Aerial view of a city with a lake in the foreground

Black and white drawing of a column with intricate carvings on it

Black and white photo of a man wearing a coat

Black and white drawing of a large building with a clock tower

Black and white drawing of a plant with leaves and roots

Molecular model of a peptide molecule on a white background

Two old German 50 Heller banknotes with a picture of a castle on them