This week

Can you identify this building to win a £25 drinks voucher?

It's green alright. And not just in paintwork. But what is the building complex?

Email your answer to First correct answer wins, the editor’s decision is final and employees of CMPi or their families can’t enter.

Last time

The building on 4 April was the John Watkins Plaza at the London School of Economics, designed by MacCormac Jamieson Prichard and completed in 2005. The winner was Richard Ellis of PRP Architects