Undated handout photo issued by World Architecture Festival 2013 of The Halley VI centre designed by British architects Hugh Broughton in Antarctica which is a dismantlable research station created in the icy wastes for the British Antarctic Survey and has been shortlisted for a global architecture award. (Photo by World Architecture Festival 2013/PA Wire)

Undated handout photo issued by World Architecture Festival 2013 of the Al Bahar Towers designed by Aedas Ltd in the Abu Dhabi, United Arab Emirates, which is among the nominees for the World Architecture Festival Awards 2013. (Photo by World Architecture Festival 2013/PA Wire)

Undated handout photo issued by World Architecture Festival 2013 of the Emporia designed by Wingardh Arkitktkontor AB in Malmo, Sweden, which is among the nominees for the World Architecture Festival Awards 2013. (Photo by World Architecture Festival 2013/PA Wire)

Undated handout photo issued by World Architecture Festival 2013 of the Kontum Indochine Cafe designed by Vo Trong Nghia Architects in Kontum City, Vietnam, which is among the nominees for the World Architecture Festival Awards 2013. (Photo by World Architecture Festival 2013/PA Wire)

Undated handout photo issued by World Architecture Festival 2013 of the Heydar Aliyev Centre designed by British-based Zaha Hadid Architects in Baku, Azerbaijan, which is among the nominees for the World Architecture Festival Awards 2013. (Photo by World Architecture Festival 2013/PA Wire)

Undated handout photo issued by World Architecture Festival 2013 of the L'Avenue Shanghai designed by Leigh & Orange in Shanghai, China, which is among the nominees for the World Architecture Festival Awards 2013. (Photo by World Architecture Festival 2013/PA Wire)

Undated handout photo issued by World Architecture Festival 2013 of The Blue Planet designed by 3XN in Copenhagen, Denmark, which is among the nominees for the World Architecture Festival Awards 2013. (Photo by World Architecture Festival 2013/PA Wire)