The Thyssen-Bornemisza National Museum (Spanish: Museo Nacional Thyssen-Bornemisza, pronounced [muˈseo ˈtisen boɾneˈmisa]; named after its founder, Baron Heinrich Thyssen-Bornemisza), or simply the Thyssen, is an art museum in Madrid, Spain, located near the Prado Museum on one of the city's main boulevards. It is known as part of the "Golden Triangle of Art", which also includes the Prado and the Reina Sofía national galleries. The Thyssen-Bornemisza fills the historical gaps in its counterpart