Cherry Blossom Festival
Held annually at the end of March, it is styled "The Pinkest Party On Earth".
Macon claims to have the most Yoshino cherry trees than any other city, over 300,000 of them. One misconception is that they are all in one area. Rather, they are scattered all over the city, although there are areas with high concentrations of the pinkish-white blooms.
There are all kinds of activities- concerts, races, shows, parades, home tours, etc- throughout the 10 day time frame of the festival.
Central City Park hosts something like a County Fair with rides, food vendors, live music, etc.
There is also a Cherry Blossom Trail. You get a map at the visitor's Center and take about a 1 hour drive around town to see different neighborhoods with concentrations of the blooming trees.