The Iglesia de la Santísima Trinidad (Holy Trinity Church) was organized by British residents in Ponce, Puerto Rico, as an Anglican congregation in 1869.

They built their first church of wood and metal at this site in 1873, aided by materials sent by Queen Victoria's government, including a bell cast in England in 1870.

The building follows the typical cruciform plan, created by a double-height nave with a crossing situated just west of the semi-circular apse.

The exterior walls are void of any ornamentation as well, and the composition is capped by a ceramic tile roof typical of mission-style churches.

Nonetheless, the frontispiece is flanked by buttresses and is punctured by a circular window at a second-floor height, reminiscent of the neo-Gothic church architecture common throughout the United States.

A projecting, one-story, cubical reception section provides access to the nave through a semi-circular arch with iron grillework.

[4] A small garden surrounds the building, fenced from the sidewalk by iron railings with concrete posts at equal intervals.

The combination of these architectural styles, not common in Puerto Rico, makes this structure a unique example of its kind in the city of Ponce.

In addition, the church is a good example of construction in a period of cultural and architectural transition in Puerto Rico, using concrete as a main building material, but keeping with the centuries-old tradition of exposed wooden rafters and Spanish-tile roofing.

[7] The synthesis of styles, technologies, and cultures represented in this building, along with the history of the congregation it serves, have been admired and respected by the people of Ponce.