Museum bosses have launched a search for a designer to oversee the complete overhaul of its grounds.
The decision follows a recent OJEU notice for the redesign of its galleries, and a successful extension, which was completed four years ago.
The original building was described by Pevsner as 'one of the boldest public buildings of its date in Britain' with a 'strong dominatingly curved' facade similar to that of the Whitechapel Gallery - Charles Harrison Townsend's other gem.
The new plans for the gardens are described as an intention to 'update the facilities to make them suitable for the 21st century.
'This will involve improvements to the garden's infrastructure, including, paths, fences, toilets, a bandstand, and greenhouses.'
Museum bosses also want a relandscaping exercise to 'rationalise the ethno-botanic planting, picnic areas, activity areas and quiet spaces'.
For more information, visit www.ted.europa.eu