La Unión is recognized for its high-altitude agriculture, particularly the commercial cultivation of papa capira, which heavily influences the economic flow around the plaza.
The square sits at an elevation of approximately 2,500 meters above sea level, contributing to the cool climate characteristic of the Eastern Antioquian highlands.
The town was historically a stopover point on the route between the Valle de Aburrá and the agricultural regions of the Oriente Antioqueño.
The plaza frequently hosts community-led agricultural markets where local produce is traded directly by regional growers.
Plaza Mayor de La Unión serves as the central hub of La Unión, Antioquia, a municipality historically known as the 'Potato Capital of Colombia.' The square is characterized by its traditional Antioquian layout, featuring a central park integrated with surrounding civic and religious architecture. It functions as the primary meeting point for locals and farmers arriving from the surrounding agricultural highlands. The plaza is anchored by the Parroquia Nuestra Señora de las Mercedes, a significant religious structure overlooking the square. Its layout reflects colonial urban planning, serving as a focal point for the town's social, commercial, and administrative activities. The area maintains a high degree of pedestrian traffic due to its proximity to the main commercial district and municipal offices.
The center of the square looking toward the façade of the Parroquia Nuestra Señora de las Mercedes.
Bring a jacket, as the altitude causes rapid temperature drops once the sun sets.
Observe the local pace of life by sitting at one of the surrounding cafes to watch the market activity.
Engage with local vendors during harvest seasons to purchase fresh, high-altitude regional produce.
Do not litter, as the plaza is a point of community pride and intensive daily cleaning by residents.
Maintain a respectful demeanor when near the church entrance; casual attire is standard but modest clothing is preferred for religious areas.