DENVER (AP) — Denver International Airport's often-maligned sculpture of a rearing blue mustang with glowing red eyes is about to turn 5 — an important milestone for public art in the city.

Why? Because petitions to remove artwork aren't accepted in the first five years.

Now that the 32-foot-tall horse — nicknamed "Bluecifer" by snickering locals — is about to celebrate its birthday, a debate about what to do with the sculpture is sure to begin.

KUSA-TV reports to make a pitch to remove or relocate the sculpture, a petition must be filed with the Denver Commission on Cultural Affairs.

The sculpture was created by Luis Jimenez, who was killed in 2006 when a section of the unfinished work fell on him at his studio. Jimenez's sons completed the sculpture, which was installed Feb. 11, 2008.

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