It's Eid al-Adha, and Muslims in Waterloo region gathered Tuesday to celebrate.
The festival marks the end of the Hajj, the annual pilgrimage to Mecca.
It's also known as the Festival of Sacrifice to mark when the Prophet Ibrahim showed his willingness to kill his son for Allah and Allah gave Ibrahim a ram to sacrifice instead.
It differs from Eid al-Fitr, which is celebrated at the end of the holy month of Ramadan. That was celebrated this year in June.
On Tuesday, hundreds gathered at the Kitchener Memorial Auditorium, and the day started with prayers followed by a celebration that included bouncy castles, fire trucks, a barbecue and sweets.
Much of the planned activities, like bouncy castles, had to be moved indoors due to rain, but it didn't slow down the celebration.