Person wearing a helmet and riding a bicycle down a street lined with…

Old 50 Pfennig banknote with a picture of a house on it

Topographic map of the city of San Francisco

Gas station with a car parked in front of it

Tree with lush green leaves and branches against a bright blue sky

Close up of a rock with a lot of dirt on it

Close up of a plant with green leaves and white flowers

Group of people in small boats on a river

Cobblestone path lined with pink flowers next to a white wall