Germiston grew up around gold, founded in 1886 as mining camps sprang up on the East Rand, and it remains home to the Rand Refinery, the largest single gold refining operation in the world. The town became a major railway junction for the Witwatersrand, and its industrial character is still visible in the factories and marshalling yards that ring the older city centre. Germiston Lake, created from a disused mine pit, now anchors a public recreation area used for boating, picnics and running events. Today the town sits within the City of Ekurhuleni, wedged between Johannesburg and the OR Tambo airport corridor, giving it an unusually dense mix of heavy industry, aviation (via nearby Rand Airport) and residential suburbs like Bedfordview.