The Main Garden was laid out at the time of the city’s founding. During the colonial period, it was known as the Plaza Maior; in the era of independence, it became the Plaza de Armas; and since 1917, it has been called Plaza de la Constitución.

At the end of the 19th century, Ramón Dávalos built a central fountain, leveled and paved the ground, and created the garden beds in the layout still preserved today. In 1907, Benito Soriano Filiberto introduced electric lighting to the plaza.