There's a reason you keep seeing St. Louis on those lists for the best places for start-up companies. It's a 200 acre stretch of land in midtown with 250 companies and more than 4,000 employees.

You've likely heard about the Cortex District.

Five on Your Side is giving you an inside look at this innovation center that experts say is driving the future of the city's economy.

"We see this as the Austin or Seattle of ten years ago," says Kim Plank with the Cambridge Innovation Center, a company that oversees the @4240 Building in the Cortex District.

"We're not just looking for what's hot today, we're looking for what's going to feed St. Louis for the next generation," Phyllis Ellison with Cortex said.

Between IKEA on the eastern boundary, and Barnes Jewish Hospital on the west, more than 4,000 people report to work here every day.

"It's sort of like the Ritz Carlton of co-working places," says Kim Plank.

Inside the @4240 building is what's called a "co-working space."

High tech companies here share coffee, a game of chess, even ping pong. And that's just the beginning.

"Meditation and yoga are free massage you have to pay for," Plank smiles.

Click on the video on this page to see what a typical work day is like for people inside the Cortex District.