The New Mottisfont visitor Centre in the Hampshire countryside was designed by London Architects Burd Haward.
The design needed to be sympathetic to the surroundings and so the architects opted for Corten steel for the cladding and facade glazing.
The welcome centre was built in response to a rapid increase in visitors over the last few years to this national Trust property.
It contains a Visitor Reception, shop, plant sales area and toilets, as well as places to meet people and plan a visit.
The new building which opened in January 2016, won a prestigious RIBA (Royal Institute of British Architects) South Award 2016.