Indianapolis is still paying for the Hoosier/RCA Dome and it was demolished in 2008.
Just read up on this, Said the RCA Dome was paid off in 2020. The kicker though is that the Colts are under lease at L.O.S. and if they are not one of the top 5 most valuable franchises in the NFL at the end of the decade they can get out of the lease, They are currently #22. Also said City is currently behind on payments to pay off funding.