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

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

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

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

Chicago cityscape from Lake Michigan, the Adler Planetarium Sundial in the foreground with the 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

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

Clock tower with medieval sundial in the Peoples Square Narodni trg, Old Town, Split, Dalmatia, Croatia, Europe

Tower Bridge and sundial, London, England,

Tower Bridge and sundial, London, England,

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

An old bell tower in the Terra Nova section of Bastia in northern Corsica, France, Europe

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

Haus zum Thiergarten building with a sundial in the old town of Schaffhausen, Canton Schaffhausen, Switzerland, Europe

Belfry of the St. Kunigund church, detail with tower clock and sundial, Schnaittach, Middle Franconia, Bavaria, Germany, Europe

Sundial on the Obertor old gate tower, Grand'Rue, Ammerschwihr, Alsace, France, Europe

Sundial, Kreuzherrnkirche Church, former Kreuzherren monastery, Memmingen, Unterallgaeu district, Allgaeu region, Swabia, Bavaria, Germany, Europe, PublicGround

Sundial and clock at tower, Burghausen, Upper Bavaria, Germany

Old clock tower, 16th century, castle complex Burghausen, castle No. 48, Burghausen, Upper Bavaria, Germany, Europe

Old clock tower, 16th century, castle complex Burghausen, castle No. 48, Burghausen, Upper Bavaria, Germany, Europe

Sundial, astronomical clock on the facade of Amalienborg Castle, Hofburg, Imperial Palace, Vienna, Austria, Europe

Sundial on the gatehouse of Kloster Wessobrunnn Abbey, Pfaffenwinkel, Upper Bavaria, Bavaria, Germany, Europe

Detail of the old clock tower, 16th century, castle complex Burghausen, castle No. 48, Burghausen, Upper Bavaria, Germany, Europe

View showing sundial and family shields, Countess Pillar, dating from 1656, Cumbria, England, United Kingdom, Europe