Piazza Santa Trìnita contains a large monumental granite column originating in ancient Roman times, and topped by a 16th century bronze statue of Justice. The Grand Duke Cosimo de' Medici I had this column erected in 1570 to commemorate the place where, on August 2, 1537, he had received the news of the victory by his loyal troops over the rebellion against his rule by certain noble Florentine families, among whom the Strozzi family.

Facing onto the piazza opposite the church, there is the beautiful Bartolini-Salimbeni Palace, a masterpiece of the late Renaissance designed in the first decade of the 16th century by Baccio d'Agnolo.
The church of the Holy Trinity itself was built by the Benedictine monks from Vallombrosa in 1300 and was refurbished at the end of the 16th century and again the following century. These works resulted in the façade by Bernardo Buontalenti that you see today.
Inside, the style is Gothic and the effect of the three naves is very evocative. There are a number of artworks to see. Very worthy of note is the elegantly designed Usimbardi Chapel which you will see on the left of the great Choir Chapel. This was designed at the beginning of the 17th century by Ludovico Cardi, called "il Cigoli" after his birthplace. He also did the paintings on the walls and the frescoes on the ceiling.