Which Cities Have The Most Airbnb Listings?

Airbnb has gone from strength to strength since it was founded in San Francisco in 2008. Today, the website has over 2 million listings in 191 countries worldwide. Its apartments and rooms are on offer in 34,000 cities but which are proving the most popular? Paris is the service's premier city with 78,000 listings, beating second-placed London's 47,000.