The walk to the old Sant'Angelo spring is a journey steeped in beauty. The illustrious Terenzio Mamiani, born here in the late 1700s and the last Count of Sant'Angelo, later involved in the 1831 uprisings of the Italian Risorgimento, wrote to his brother in 1841 while in exile: "Perhaps I'll make you laugh if I tell you that one of the desires I have hidden in my soul is to see again—guess what? Sant'Angelo and the tall poplars that leaf along the slope leading to the spring."

During the 19th century, Costanza Monti, Giulio Perticari's beautiful and cultured wife, also spent much time drawing and admiring the place, which became the poets' spring: the place was chosen as a setting for reciting poems and finding an intense aesthetic experience in contact with nature with the members of her Arcadia. For the extraordinary members of this circle, Sant'Angelo was a place of recreation and rest, but also the ideal setting for a love of poetry they shared with Leopardi, Stendhal, and Monti, which led to the construction of a theatre in the style of the one in Pesaro.

But the fountain has always been a public water source: even when it was on private property, the municipality was responsible for its maintenance because its use has always been public. The last two documented interventions were in 1834 and 1882, and this date likely marks the transformation of the fountain from the design handed down by Liverani in 1850: the square basin became round, steps no longer allowed it to be used as a fountain for animals, and the structure was enclosed by a wall and a fence, likely to prevent the consequences of subsidence. The name of the architect who designed the new fountain is unclear.

Today, its function is exclusively aesthetic and cultural: concerts and other cultural events are held there.