About 600.000 years ago the so called "Heidelberg Man" lived in the surroundings. In 1907 his jaw-bone was discovered at the nearby village Mauer and it is the earliest evidence of human life in Europe.
After the Romans the Alemans lived here, later the Celts. During the Middle-Age the famous Castle was built, started at 1225.
In the 17th century the Castle and the city were captured by French troops, in 1693 the Castle was nearly destroyed.
In the 18th century the city was rebuilt in Baroque style. Between 1920 and 1933 the reputation of the University was enhanced by notable physicians and humanists.
After World War II the University re-opened in 1945. Today Heidelberg has about 135.000 inhabitants and 28.000 students.