Despite having been founded without an existing royal collection on which to build, and housed in buildings often deemed inadequate for their purpose, the National Gallery has grown to be a collection of international renown. The collection is small in comparison with other national collections such as the Louvre, but with a broad scope and paintings of exceptionally high quality. It is also said of the collection that it provides a well-balanced overview of Western art history up to the 20th century; every major development in painting from the Early Renaissance to the Post-impressionists is represented in its holdings, often by masterpieces.