A clock tower is a tower built with a large clock face on one or more (often all four) of its sides so as to be visible to a large number of inhabitants of an area. The mechanism inside the tower is known as a turret clock. It often marks the hour (and sometimes segments of an hour) by sounding large bells or chimes, sometimes playing simple musical phrases or tunes. The clock tower is usually part of a church or municipal building such as a town hall, but many clock towers are free-standing. Often the tallest structure in town, clock towers were a popular feature of city life before the middle of the twentieth century, when most people didn't have accurate and reliable watches to carry with them. Two of the most well-known clock towers are the Clock Tower, often colloquially referred to as Big Ben, of the Palace of Westminster in London, and the Spasskaya Tower of the Moscow Kremlin. Download high resolution version (1600x1200, 534 KB) File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Download high resolution version (1600x1200, 534 KB) File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... A tower is a high structure, usually man-made. ... A clock (from the Latin cloca, bell) is an instrument for measuring time. ... Bell has a range of meanings: A bell is a simple sound-making device, including Tubular bells and cowbells. ... City Hall is a 1996 film directed by Harold Becker. ... (19th century - 20th century - 21st century - more centuries) Decades: 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s The 20th century lasted from 1901 to 2000 in the Gregorian calendar (often from (1900 to 1999 in common usage). ... The Clock Tower, colloquially known as Big Ben Big Ben is the colloquial name of the Clock Tower of the Palace of Westminster in London, and an informal name for the Great Bell of Westminster, part of the Great Clock of Westminster. ... The Clock Tower, colloquially known as Big Ben Big Ben is the colloquial name of the Clock Tower of the Palace of Westminster in London, and an informal name for the Great Bell of Westminster, part of the Great Clock of Westminster. ... The Palace of Westminster lies on the bank of the River Thames in the heart of London. ... The Clock Tower of the Palace of Westminster which contains Big Ben Tower Bridge at night A red double-decker bus crosses Piccadilly Circus. ... The following is a list of towers of Moscow Kremlin Borovitskaya The Borovitskya Tower (Russian: Боровицкая башня) is a corner tower with a through-passage on the west side of the Kremlin. ... The Moscow Kremlin The Moscow Kremlin (Russian: Московский Кремль) is the best known kremlin (Russian citadel). ...