It's Light Up Night weekend, marking the official start to the holiday season in Downtown Pittsburgh. Here's what to know about this year's holiday events.

Light Up Night is scheduled to officially kick off at 4 p.m. on Saturday and will feature two stages with live music, food vendors, and an appearance from Santa.

Three rounds of fireworks will go off throughout the evening, marking different events throughout Light Up Night.

The Horne's Tree at the corner of Stanwix Street and Penn Avenue in Downtown Pittsburgh will be lit on Saturday for Light Up Night.Ceremonial fireworks will go off when the tree is lit. KDKA

The fireworks will go off when the City-County Building's tree is lit at 5 p.m., when the PPG Place ice skating rink tree is lit at 6 p.m., and when the Horne's tree at

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