In 1278, count Berthold von Rabenswal receives from Emperor Rudolph I von Habsburg the right of ownership over the Hardegg land. He begins at once the building of a new settlement next to an existing village, called Rezze. He will follow a regular plan, in the style of Bohemian burgs, around a square that remains to this day among the largest in Austria, although the current population of the settlement numbers only 4000 people. The square is beautiful, with Italian inspired Renaissance palaces, fountains and a Baroque column of the Holy Trinity. In the middle stands the city hall, a former church, repurposed in 1569. But the bigger surprise lies beneath the pavement: under the square, under the entire town and even beyond lies a labyrinth of interconnected cellars, where the inhabitants have deposited local wine. It is over 20 km long, far greater than the network of streets above.