Smiling woman's face against blue sky

Aspen trees: detail of yellow leaves and dark trunks against blue fall sky, with motion blur, abstract effect, Utah

Aspen trees: detail of yellow leaves and silver trunks against blue fall sky, with motion blur, abstract effect, Utah

Orvieto Duomo - detail of side wall with black and white striped stone, against blue afternoon sky, curved walls and decorations causing dramatic patterned effect, steps leading to ornate doorway Romanesque-Gothic style, Umbria, Italy

Close up of conch shell against blue sky

Three overlapping balloons in flight, blue-green, orange, and white with multicloloured stripes, against blue sky

Steller's Eagle flying with outstretched wings, silhouetted against beautiful sunrise sky and rising sun, Rausu, Shiretoko Peninsula, Hokkaido, Japan

Aspen trees: detail of yellow leaves and dark trunks against blue fall sky, with motion blur, abstract effect, Utah

View upwards of Siena Duomo main dome with edge of black and white striped campanile, and statue of saint, against stormy gray sky in sunlight

White clapboard detail of lighthouse against sky