Businessman and philanthropist Trammell S. Crow. Rebecca Harrington/Business Insider

DALLAS — Businessman and philanthropist Trammell S. Crow founded Earth Day Texas in 2011 and it has gotten bigger every year since.

This Earth Day weekend, 100,000 people attended the event at the Texas State Fairgrounds. School groups, families, college students saw 900 exhibitors, and about 260 speakers come together to talk about protecting the environment.

Here's what it looked like: