Bally Chohan Travel Tips is an exclusive online resource for amazing travel ideas and holiday destination plans. Find out top 10 most expensive city in the world with Bally Chohan. If you are planning your holiday then it is the high time to know your city better. Singapore got the first slot and Copenhagen stayed at 10th Position. This survey was done by the Economist in 2014 and it is surprised to see that London is nowhere in top 10 expensive city.