Happy couple standing against Brooklyn Bridge

Reggio Emilia bridge by Calatrava, detail showing curved hoop design and suspension wires against blue sky in late afernoon, Emilia Romagna, Italy

Reggio Emilia bridge by Calatrava, detail showing curved hoop design and suspension wires against blue sky at sunset, Emilia Romagna, Italy

bridge cables

Reggio Emilia bridge by Calatrava, showing curved hoop design and suspension wires against blue sky in late afternoon with trucks on and below bridge, Emilia Romagna, Italy

Reggio Emilia bridge by Calatrava, detail showing curved hoop design and suspension wires in foreground, and second bridge beyond, against blue sky at sunset, Emilia Romagna, Italy

Reggio Emilia bridge by Calatrava, detail showing curved hoop design and suspension wires, with pedestrian sidewalk, second bridge beyond, against blue sky at sunset, Emilia Romagna, Italy

Reggio Emilia bridge by Calatrava, detail showing curved hoop design and suspension wires, with pedestrian sidewalk, second bridge beyond, against blue sky at sunset, Emilia Romagna, Italy

Queensboro Bridge

Suspension bridge with skyscrapers on background at night

Brooklyn Bridge

Reggio Emilia bridge by Calatrava, detail showing curved hoop design and suspension wires with oncoming cars in foreground, and second bridge beyond, against blue sky in late afternoon, Emilia Romagna, Italy

A bird against the night sky

A bird against a purple moonlit sky

Spitzer seen against the infrared sky.

Spitzer seen against the infrared sky.

Heart shaped cloud against a blue sky

Heart shaped cloud against a blue sky

An empty swing set against a sunset sky

Tyrannosaurus Rex roaring against a colorful sky.

A large apple, fish, and children's blocks against a sky

Illustration of people walking on street against clear sky

Illustration of family walking with crowd on street against clear sky

Illustration of people with speech bubbles walking on street against clear sky

Suspension bridge against sky