The "field" is actually part of the Merdeka Square located in the center of Jakarta, Indonesia. It is one of the largest squares in the world, consisting of 75 hectares.
It is also a hotspot for residents and tourists alike. The National Monument is found in the center of the square, with the paved plaza being a monument that tends to be the site for military parades, a yearly float festival, as well as civic demonstrations. If visiting, tour the southeast corner where you will be able to pet deer in a dedicated enclosure where deer roam free. The Merdeka Palace, several museums, and many government building are near Merdeka Field.