The World's Biggest Clocks.

This is a list of clocks that have attained a level of notability because of their historical importance, accuracy, exceptional artistry, or architectural value.

The railway station clock of Aarau is 9 meters in diameter. It is the biggest clock face in Europe. It behaves almost completely like a standard Swiss railway station clock.

Minneapolis City Hall, 7.0 meter clocks on four sides with chimes on the quarter, half, and full hour. 345 feet (105 m) tower. Largest four-faced chiming clock

Shell Mex House, The Strand, London 7.018 meters on a 12 story Thames side building built in 1930 on the site of the Cecil Hotel.

Allen-Bradley Clock Tower, four 12.25 meters clocks on a 86 meters tower built in 70s,
biggest four-faced clock. Each hour hand is 4.8 m long and weighs 220 kg.
Each minute hand is 6.1 m long and weighs 240 kg.
The hour markings are 1.2 m high.

Palace of Culture and Science, Warsaw, Poland, four 6.2 meters clocks were in 2000
on this 237 meters tower built in 1955. The world's second-tallest clock tower.

Flora clock Tehran, Iran.

Cevahir Mall clock in Istanbul, a 36 meters clock with 3 meter high digits
lain on the transparent roof of the mall, built in 2005.

Colgate Clock (Indiana), 12 meters clock, built in 1906 in New Jersey for the
centennial of the Colgate Company. Moved to Indiana in 1924.

Metropolitan Life Insurance Company Tower, 8 meters clocks on all four side of this 213 meters
tower built in 1909. Each hours hand weighs 350 kg and each minutes hand weighs 500 kg.

Philadelphia City Hall, 7.9 meters clocks on all four sides of the metal portion of this
167 meters tower built in 1901.

St. Peter, Zürich, a 8.7 meters clock, built in 1534, the biggest church clock face

Zacatlán Floral Clock

Royal Liver Building clock, Liverpool, four 7.6 meters clocks on two 90 meters towers,
three on the riverside tower and one on the landward tower, built in 1911.

Emerson Bromo-Seltzer Tower, Baltimore, Maryland, four 7.3 meters clocks on a
88 meters tower built in 1911. The largest four dial gravity clock in the world.

Abraj Al Bait Towers clock in Mecca, Saudi Arabia, a 43-meter diameter clock will be
built on this 601-meter hotel tower under construction in front of the Ka'ba.

 Minneapolis City Hall with current copper roof

Kremlin clock, Moscow, 6.12 meters chiming clock on all four sides of the Spasskaya
Tower of Moscow Kremlin. First clock on the Spasskaya Tower was installed in
16th century; current (fully mechanical) mechanism dates back to 1851.

Philadelphia City Hall, 7.9 meters clocks on all four sides of the metal portion of this 167 meters tower built in 1901.