Locals love their beer, but Ljubljana's brewing tradition is far older than most people would imagine. In fact, it goes back some four millennium, which was proven by the discovery of 3,900-year-old beer barrels during excavation the Ljubljana Marshes, a UNESCO Heritage site just south of the modern city. The earliest known brewery in Ljubljana dates back at least to 1592, and by 1796 the city had six breweries, which all the more impressive since it had less than 10,000 inhabitants at that time. Meanwhile, recent years have seen a rapid growth in the popularity of craft beers made by different microbreweries in Ljubljana and its surrounding area. The Beer Experience Tour includes a stop in a local pub, with participants getting to taste eight different beers from five different breweries, two based in Ljubljana and three in other parts of the Central Slovenia region. Afterwards, the tour continues to the award-winning Brewery Museum at Pivovarna Union, where the popular Union beer has been brewed since 1864, and finishes at the brewery's own Pivnica Union pub.