Biggest festivals in Canada(Jana Chytilova.Ottawa Citizen.The Canadian Press Images)

Fireworks explode over the Parliament Building on Canada Day in Ottawa on July 1, 2004.

The Queen is coming to this week's Canada Day celebration in Ottawa, and guess what, it's gonna cost us. Not unlike the inflated security expenses needed for the G8/G20 summits, Her Majesty's presence has been reported to bloat our capital's fireworks budget by as much as $1.1 million.

But never fear, taxpayers. Most of the time — as is the case with Ottawa's July 1st fireworks — giant public celebrations reign in tons of money for their host cities, whether in the form of tourism dollars, consumer spending or an influx of locally spent cash. In honour of Canada's 143rd birthday blowout, MSN presents a rundown of some of the highest-grossing* festivals across the country.

*Measured by each event's estimated economic impact on its host city/region.