Admission to the Scottish National Gallery's permanent collection is free and is really one thing that you should do in Edinburgh.
The Scottish National Gallery (aka National Gallery of Scotland, National Gallery Complex) incorporates three buildings in the centre of Edinburgh: the National Gallery of Scotland (home to Scotland's national collection), the Royal Scottish Academy building which has temporary exhibitions, and the lower level underground building containing visitor facilities, such as shopping, learning, eating and drinking.
Locals often refer to them as simple "the galleries". The National Gallery of Scotland's display of European art is world famous. It includes the Titian's recently acquired Diana and Actaeon, and The Bridgewater Collection of Old Masters including work by Raphael (3), Titian (4), Rembrandt (1) and Poussin (8). The pictures have been on continuous public view in the National Gallery of Scotland since the collection was placed there in 1945 by the then 5th Earl of Ellesmere, later 6th Duke of Sutherland.
The National Gallery of Scotland is one of the venues for the Edinburgh Art Festival in August.