Can you identify this building to win a £25 drinks voucher?
There's no prizes for seeing through the architect's wheeze here – it’s an all-glass staircase. But which building is it in?
The building featured on 25 January was Milford House office block in Swindon, developed by Commercial Union Properties in 1988. The winner was John Blagrove from Bath
Email your answer to email@example.com
First correct answer wins. The editor’s decision is final. No cash alternatives will be offered.