Dream Builders features the world's foremost architects and designers in conversation with Razia Iqbal at the RIBA.
In partnership with BBC World Service, it launched in 2012, and has so far featured Renzo Piano, Zaha Hadid, Santiago Calatrava, Daniel Libeskind and Norman Foster.
Across history, buildings have been pushed, pulled, poured and stretched into all sorts of shapes and styles
Take a look at some of the world's most iconic buildings.
Explore some of the key projects that put British architecture back on the world map