Buses from Macedonia, Slovenia, Croatia, Bosnia and Herzegovina and Montenegro have been arriving since early Monday morning at House of Flowers, the mausoleum of Tito who died on 4 May 1980.
Carrying Tito's pictures, former Yugoslavia flags and symbols, the late leader's admirers are trying to evoke the long-gone times they now view with nostalgia.
Although Tito ruled Yugoslavia with a heavy hand for decades and is widely viewed as a dictator, he also allowed some freedoms to his citizens -- such as open travel -- that other eastern European nations under the Communists did not enjoy.
Many also credit Tito with keeping the country out of the Soviet grip, while securing the good ties with the West and substantial financial support that provided for relative prosperity at home.
In the former Yugoslavia, Tito's birthday on May 25 was celebrated by having relay runners carry a baton for weeks before and handing it to him on his birthday.
Many sympathisers are expected to visit his grave on 25 May.