The Dongdaemun Design Plaza (DDP) is what’s known in the business as an architectural showstopper. Designed by the late great Iraqi-British Pritzker Prize winner Zaha Hadid it’s a breathtakingly adventurous and innovative building like no other (except maybe others by Zaha Hadid). Construction first started in 2009 and was officially inaugurated in 2014 and built at a…