The Guam Congress Building, also known as the Guam Legislature Building, is the seat of the Legislature of Guam and is located in in Hagåtña, Guam. It was built in 1949 by Pacific Island Buildings and of Brown & Root Pacific Bridge & Maxon. It has served as a capitol and as a courthouse building. It is a Modern Movement-style building that was listed on the U.S. National Register of Historic Places in 2007.