Meet the 30 Under 30 Coolest Entrepreneurs

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29 of 30

Christopher Kelly and Ryan Simonetti, Sentry Centers

Simonetti and Kelly, college buddies at Villanova, had started several other companies together by the time Simonetti came up with the idea for Sentry Centers. The concept: take unused space in office buildings and renovate it as off-site meeting destinations. The partners, who predict $8.7 million in revenue this year, will open a second New York facility in August and are planning more for Los Angeles, Washington, D.C., and New York City. Read more.