Any time Australia's biggest city hosts a major event -- from the 2003 Rugby World Cup to the Asia Pacific Economic Cooperation (APEC) summit last year -- it is boomtime for the sex industry, insiders say.
And with 225,000 foreign and Australian pilgrims expected in Sydney for six-days of events celebrating the Catholic faith from July 15-20, they expect World Youth Day to be no different.
Sydney brothel Xclusive is putting on extra workers to provide sexual favours to lonely tourists and Sydneysiders during event.
"We will get a lot of tourists, pilgrims and we will still get the curious," a spokeswoman for the Bondi Junction bordello told AFP.
"The World Council of Churches, when they had their congress in Canberra back in the 1990s, that was the best business period ever.
"Obviously we're not promoting it at your traditional Catholic community and it's unlikely we will get priests through.
But there'll be lots of tourists in town and there'll be lots of people in town.
"