Tonight, downtown Pittsburgh kicks off the holiday season with Light Up Night. This past week, the stores and businesses have been busy decorating. The Holiday Market has been built and wired and ready for shoppers in Market Square. Macy's Holiday windows will be revealed this evening. The huge Christmas Tree will be lit, There will be lots of music, shopping, eating and fireworks. This is a fun evening and I am always surprised by the number of people who venture to town (despite the cold temperatures) on Light Up Night.