Rotring pen on Arches white paper 8ft x 5ft.
Absolutely incredible pieces of artwork by Mark Lascelles Thornton. He's included iconic buildings from all the over world, both complete and under construction - from the Chrysler Building and Freedom Tower of NYC, to the Gherkin, The Shard, Walkie Talkie and Pinnacle of London.
Other structures include Taipei 101 (Taiwan), John Hancock Centre (Chicago), Petronas Towers (Kuala Lumpur) and Shanghai World Financial Centre (Shanghai)
Click more for detail shots: