Edited By: Pragati Bhandari

Water Clock of Karnak An ancient Egyptian water clock, dating back to around 1417-1379 BCE. It used the flow of water to measure time.

Sundial of Ahaz  Believed to be from around the 8th century BCE, it was an ancient sundial mentioned in the Bible, specifically in the Book of Kings.

Antikythera Mechanism  While not a clock in the modern sense, it was an ancient Greek analog computer used to predict astronomical positions and eclipses for calendrical and astrological purposes. It dates back to the 2nd century BCE.

The Horologion of Andronikos of Kyrrhos  Also known as the Tower of the Winds, located in Athens, Greece. It was built around 50 BCE and had a complex mechanism for telling time and displaying weather information.

The Salisbury  Cathedral Clock  Dating back to 1386, this is one of the oldest working clocks in the world, located in Salisbury, England.

Rostock Astronomical Clock  Located in Rostock, Germany, it was built in the 15th century and is renowned for its intricate astronomical and astrological features.

The Wells Cathedral Clock  Dating back to the late 14th century, this clock is located in Wells, England, and is known for its astronomical dial.

The Prague  Astronomical Clock Installed in the 15th century, this clock is located in Prague, Czech Republic, and is famous for its hourly animated figurines and astronomical dial.