The Timepiece Sundial and Tower Bridge at sunset, St. Katharine's and Wapping, London, England, United Kingdom, Europe

Christchurch Priory, Christchurch, Dorset, England, United Kingdom, Europe

Tower Bridge with the sundial statue at St. Katherines Dock at night, London, England, United Kingdom, Europe

The Adler Planetarium sundial with Lake Michigan and city skyline beyond, Chicago, Illinois, United States of America, North America

Chicago cityscape from Lake Michigan, the Adler Planetarium Sundial in the foreground with Willis Tower, formerly the Sears Tower beyond, Chicago, Illinois, United States of America, North America

Sundial sculpture at the Adler Planetarium and city skyline, Chicago, Illinois, United States of America, North America

Jantar Mantar Observatory, New Delhi, Delhi, India, Asia

The Timepiece Sundial and Tower Bridge at sunset, St. Katharine's and Wapping, London, England, United Kingdom, Europe

A live sundial shell (Architectonica perspectiva) crawls across the seafloor in Komodo National Park, Indonesia. This tropical region in Indonesia is known for its spectacular coral reefs and high marine biodiversity.

A snail about the size of a coin generally lives under the sand but comes out at night to feed, Anilao, Philippines.

Sundial and skyline across Lake Union, Gas Works Park, Seattle, Washington State, United States of America, North America

City centre and Hallgrimskirkja on skyline from Perlan viewing deck, Reykjavik, Iceland, Polar Regions

Sundial between two windows, Franciscan Monastery, Bozen, Sudtirol (South Tyrol), Bolzano district, Italy, Europe

Statue of Benvenuto Cellini and sundial, Ponte Vecchio, Florence (Firenze), UNESCO World Heritage Site, Tuscany, Italy, Europe

Observation deck of The Giant Sundial, Samrat Yantra, The Supreme Instrument, at The Observatory in Jaipur, Rajasthan, India

Observation deck of The Giant Sundial, Samrat Yantra, The Supreme Instrument, at The Observatory in Jaipur, Rajasthan, India

Sundial on plate of slate inscribed Noiseless falls the foot of time that only treads on flowers 1905, Little Hall, Lavenham, Suffolk, England, United Kingdom, Europe

Sundial on mudejar gate and walls, Seville, Andalusia, Spain, Europe

West Temple, 7810 feet on left, and Sundial Tower, 7590 feet center rear, Zion National Park, Utah, United States of America, North America

Riquewihr, Alsace, France, Europe

Sundial on mudejar gate and walls, Seville, Andalusia, Spain, Europe

Sundial in Shakespeare's Garden, Golden Gate Park, San Francisco, California, United States of America, North America

Sundial at Museo de las Casas Reales, UNESCO World Heritage Site, Santo Domingo, Dominican Republic, West Indies, Central America

Horizontal-Sonnenuhr (horizontal sundial) at Hoheward tip and Power plant Steag (Herne), Im Emscherbruch, Herten, Ruhrgebiet, North Rhine-Westphalia, Germany, Europe

Horizontal-Sonnenuhr (horizontal sundial) at Hoheward tip and Power plant Steag (Herne), Im Emscherbruch, Herten, Ruhrgebiet, North Rhine-Westphalia, Germany, Europe

Prinz Georg Garten (Prince George Garden), Darmstadt, Hesse, Germany

Prinz Georg Garten (Prince George Garden), Darmstadt, Hesse, Germany

Prinz Georg Garten (Prince George Garden), Darmstadt, Hesse, Germany

Low angle view of a sundial, Chicuito, Puno, Peru

Valley Fischleintal (Val Fiscalina) in the nature park sexten dolomites in deep winter, part of the UNESCO world heritage dolomites. Mount Einserkofel. Europe, Central Europe, Italy, January

Sundial, St. Johann Mustair monastery, Mustair, Val Monastero, Bassa Engadina, Switzerland, Europe

Sundial on belltower, Mezzocorona, Trentino, Italy

Foreshortening of a house with window and sundial, Mezzocorona, Trentino, Italy

Sundial, Briançon, Serre-Chevalier, France, Europe

Adler Planetarium sundial and city skyline Chicago Illinois USA

USA, California, Redding, turtle bay, sundial bridge over Sacramento river, USA, California, Redding