KANSAS CITY, Mo. (AP) — Crews temporarily removed a 24,000-pound aluminum sculpture from on top of Kansas City’s Bartle Hall.

The artwork, which has been on the building along with three other pieces for more than two decades, was removed by crews in a helicopter on Sunday. The Sky Station works were installed in 1994 as part of city’s public art program.

The piece removed Sunday will undergo repairs for a lightning strike and water damage.

Dozens of spectators gathered nearby to watch the procedure, which involved closing area streets and highway ramps. Nearly all of the $1.3 million cost for repairs is covered by insurance.

Reinstallation is expected in September.