San Quentin Correction Facility is one of North America's most notorious prisons. It's held convicts like Charles Manson, and today it houses the largest death row population in the USA. It is here that those sentenced to death in California are executed.

It's everything you might think of jail opened in 1852. It's cells are dark, claustrophobic and threatening. However outside in the Californian sun is one of the more progressive rehabilitation projects run for its general population. The tennis program.

The tennis court is one of few places in the prison where racial divides do not exist. No matter of race or gang affiliation, the tennis court is a neutral zone.

Photo: San Quentin inmate play tennis Credit: BBC