Fiestas patronales (patron saint festivals) are held in the central plaza every year.

The Laws of the Indies, Spanish law, which regulated life in Puerto Rico in the early 19th century, stated the plaza's purpose was for "the parties" (celebrations, festivities) (Spanish: a propósito para las fiestas), and that the square should be proportionally large enough for the number of neighbors (Spanish: grandeza proporcionada al número de vecinos).

These Spanish regulations also stated that the streets nearby should be comfortable portals for passersby, protecting them from the elements: sun and rain.

Located across from the central plaza in Añasco barrio-pueblo is the Parroquia Nuestra San Antonio Abad, a Roman Catholic church which was inaugurated in 1919.

[15][16][17] The following sectors are in Añasco barrio-pueblo:[18] Casco del Pueblo, Edificio Diego Salcedo, Edificio Francis Villages Elderly, Edificio Victoria, Urbanización Carlos Feria, Urbanización Los Maestros, and Urbanización Villas de Añasco.