Travel Picks: Top 10 Street - Food cities ▻ Plot: Istanbul is the largest city in Turkey, constituting the countrys economic, cultural, and historical heart. Istanbul: .\rbr\rbrTravel Picks: Top 10 Street - Food cities ▻ Plot: Bangkok is the capital and the most populous city of Thailand. Bangkok is one of the worlds hottest cities.\rbr\rbrTravel Picks: Top 10 Street - Food cities ▻ Plot: Hanoi is the capital of Vietnam and the countrys second largest city. Its population in 2009 was estimated at 2.6 .