The World Monuments Fund (WMF) has included Battersea Power Station on its list of 100 most endangered sites in a bid to speed up renovation of the building.
The international charity has warned that until plans for the Grade II-listed landmark are realised, it remains at risk of ongoing and irreparable decay.
The catalogue of the most threatened sites around the globe, to be named this week, aims to draw attention to their plight and raise funding for repair. Along with four UK entries, the list includes sites on all seven continents.
WMF director Colin Amery said the inclusion of Battersea Power Station was designed to 'put it in the spotlight'. Amery said urgent action was needed to halt the decay of the great work by Sir Giles Gilbert Scott - including its significant Art Deco interiors - and to speed up redevelopment.
'It's an important building for London and not enough has been done to ask Londoners what they want, ' he said.
Developer Parkview International maintains that work on Grimshaw's £500 million scheme to convert the power station into a leisure centre continues apace.
However, local campaigner the Battersea Power Station Community Group, which proposed the building for inclusion on the list, has hit out at Parkview's handling ofthe project, calling for it to surrender the freehold and make way for residential development.
For the first time the WMF's list includes a site in Antarctica.
Sir Ernest Shackleton's 1909 base hut remains largely untouched and contains thousands of personal items. The Gulag labour camp Perm-36, used by the Soviet state to imprison political dissidents and activists until 1987, is also featured, as is the Oranienbaum in St Petersburg. The Rococo interiors of the palace, the setting for Catherine the Great's coup d'etat, are rapidly being eroded by damp.
The three other UK sites identified are Strawberry Hill in London's Twickenham, Stowe School in Buckinghamshire and Alexander Thomson's St Vincent's Street Church in Glasgow.