Have you hard of the Southern Baptist Convention? It is a Christian denomination based in the United States.
Yes, I have, but have never attended one. 
I have attended many, We baptists generally recognize two ordinances, baptism and the Lord's supper. That is our belief. 
Do they hold the convention at the same location every year?
United States who split with northern Baptists over the issue of slavery, specifically whether Southern slave owners could serve as missionaries. After the American Civil War, another split occurred when most freedmen set up independent black congregations, regional associations, and state and national conventions, such as the National Baptist Convention, which became the second-largest Baptist convention by the end of the 19th century. 
Since the 1940s, the Southern Baptist Convention has shifted from some of its regional and historical identification. Especially since the late 20th century,
division was precipitated by the General Association's adoption of an article which rejected premillennialism: ""ARTICLE 12. We believe that, at Christ's coming in the clouds of Heaven, all Christians will be gathered with Him in the clouds and that time shall be no more, thus leaving no time for a literal one thousand year reign"."
Separate Baptist in Christ Ordinances.
Separate Baptists hold a standard orthodoxy in common with many other Baptists. They hold five ordinances, Baptism, the Lord's Supper,