Plaza Constitución, also known as Plaza Matriz, is the oldest plaza in Montevideo. It is located in the first part of the city that was built: Ciudad Vieja.
The Montevideo Metropolitan Cathedral and the Montevideo Cabildo are located in front of this square.
It was named in honor of the Spanish Constitution of 1812.
Wikipedia https://en.wikipedia.org/wiki/Constitution_Square_(Montevideo)
Address 1371 Calle Ituzaingó, Montevideo, Uruguay
Coordinates -34°54'23.76" N -56°12'12.764" E