St Augustine, Florida was the site of the very first Thanksgiving in what is now the United States. It was on the Feast of Our Lady's Nativity in 1565! This was decades before the Pilgrims landed in Massachusetts and has the "first" Thanksgiving in 1621.
The Cathedral Basilica was built in the 1790's and you can see the strong Spanish influence on the architecture and decorations of the church.
Cathedral Basilica of St Augustine
St Augustine, Florida
O God, Who sufferest not that any who hope in Thee should be over afflicted, but listenest kindly to their prayers: we thank Thee for having heard our requests and granted our desires, and devoutly entreat Thee that what we have received may make us worthy to be delivered from all adversities.
Postcommunion from a Mass of Thanksgiving