There are two rules to the challenge: they must stay overnight in all 50 states, and find the coolest Airbnbs in the U.S. — by staying in the most interesting ones in each state.

Ryan Trahan and Haley Pham stopped in Galesburg, MI, as part of their 50 states in 50 days challenge, staying in a Frank Lloyd Wright house.

For each new follower Trahan receives on Instagram, $0.01 is donated to St. Jude. Start the day smarter. Get all the news you need in your inbox each morning. More: How to see 8 Frank ...