Pisa, the city that is home to one of the most recognizable symbols of Italy, is also the site of one of the most important works of modern art in Italy—Keith Haring’s Tuttomondo.

Haring painted the 180-meter “All the World” mural on the rear exterior of the church of Sant’Antonio Abate in 1989. It was to be one of Haring’s last major works of art before he died of AIDS-related complications in 1990—even though the already-famous pop artist is known to have been creative until the very end.