The galleries were built on
the site of The Mound, originally known as the Earthen Mound.
the Earthen Mound formed a raised area separating
Princes Street East Gardens and West Gardens.
Earthen Mound consisted of earth that had been
excavated to make the foundations and basements of the buildings in
the earth was taken away and used to landscape Princes Street Gardens in
the early 1850s, leaving a level site at the Mound ready for the
building of the new National Gallery of Scotland.