Rome will bid for the 2024 Olympics, adding a European challenger to a potential U.S. bid for the Games.
The bid also proposes venues in Florence, Naples and Sardinia.
Italian media reports suggested the Vatican could host events, according to The Associated Press, since the International Olympic Committee now allows competitions held outside a host nation in exceptional circumstances.
Rome hosted the 1960 Olympics, the Games of Muhammad Ali, Wilma Rudolph, Rafer Johnson and Ethiopian barefoot marathon champion Abebe Bikila.
Italy also hosted the 1956 Cortina d’Ampezzo and 2006 Torino Winter Games.
Rome was previously considered for a 2020 Olympic bid that did not materialize. Before that, Rome lost to Athens in the final round of voting for the 2004 Olympics.
In October 2013, Rome was reportedly ruled out as a potential 2024 bid due to finances, which would have left Milan as the only Italian candidate.
The U.S. Olympic Committee is expected to announce if it will bid for the 2024 Olympics on Tuesday. If it does bid, it will choose one city out of Boston, Los Angeles, San Francisco and Washington, D.C.
Germany has said it will bid for the 2024 Olympics, either with Berlin or Hamburg.
Paris, which hosted the 1924 Olympics, may also bid.
A South African Olympic official said it is preparing a 2024 bid, too. An African nation has never hosted an Olympics.