This app will stop working on 3rd April 2017. But you can still listen to BBC iPlayer Radio via your browser by visiting bbc.co.uk/radio
Habitat 67 designer on his mentor Louis Khan and the creating of memorial buildings
The architect of the Library of Birmingham on transport patterns and public space.
Olympic Cauldron designer on 'making' and getting your hands dirty
David Adjaye, architect of the Smithsonian NMAAHC in Washington DC.
Zaha Hadid was the first woman and first Muslim to win the Pritzker Architecture Prize.
Calatrava is an architect, artist and engineer of dazzling bridges.
Norman Foster created the Gherkin in London and redesigned the New York Public Library.
How architect Daniel Libeskind won the fierce competition to rebuild Ground Zero.
Razia Iqbal talks to the architect of London's pyramid of glass, The Shard