Terra Chã (English: low land) is a civil parish in the municipality of Angra do Heroísmo on the island of Terceira in the Portuguese Azores. The population in 2011 was 2,915, in an area of 10.07 km².
Part of the suburban beltway of Angra, the ecumenical parish (São Pedro) was established by King John VI, who granted it a charter on 6 September 1825, but its borders and administrative organs were confirmed by act of the Civil Governor of Angra ten years later on 26 November 1835. However, according to the testament of Pero Anes do Canto, its establishment as a parish dates back to the 15th century.
Terra Chã was the centre of guerrilla activity during the Liberal Wars, as well as a support centre during World War II and later in the Portuguese Colonial war. The role played by the local Hospital Militar da Terra Chã during these periods was instrumental in driving development in the region.
The earliest document refers to the "Charcão", which is a toponomic derivative of charco (meaning: "a standing pool of water, which is not too deep, but filled with a mixture of unfiltered particulates"). This may have been a reference to wetlands, probably the first and only native water sources. Initially, the area around the present parish was a source of firewood for many of the residents of the town or settlers along the southern coast.
A Terra Chá is a region of Galicia, in the Province of Lugo. The overall population of this local region is 47,697 (2005). The regional capital and major population lies in Vilalba.
A Terra Chá is in the northern interior of the province Lugo.
It is the largest region of Galicia at 1,822.75 km ² and has 47,697 inhabitants
Manuel María, one of their famous poets, wrote a poem in 1954 entitled Terra Chá.
The landscape of this plain combines knolls crowned by forts with agricultural plains and grasslands, important lagoons like the ones in Cospeito or Caque and over a hundred rivers and streams that run through the region. Its average height is 400 meters.
Two mountain ranges named Serra da Cova da Serpe and Serra da Loba (700–800 meters) set the limits with the province of A Coruña, while in the north, the mountains of A Carba, Xistral and Toxiza interpose marinas, while reaching the highest altitudes in the county up to 1,000 m.
The municipalities of Terra Chá are Abadín, Begonte, Castro de Rei, Cospeito, Guitiriz, Muras, A Pastoriza, Vilalba and Xermade.