the modern central business districts of Levent and Maslak. In 1995, the Istanbul Stock Exchange moved to its current building in the İstinye quarter of the Sarıyerdistrict.
As the only sea route between the oil-rich Black Sea and the Mediterranean, the Bosphorus is one of the busiest waterways in the world; more than 200 milliontonnes of oil pass through the strait each year, and the traffic on the Bosphorus is three times that on the Suez Canal. As a result, there have been proposals to build a canal, known as Canal Istanbul, parallel to the strait, on the European side of the city. Istanbul has three major shipping ports—the Port of Haydarpaşa, the Port of Ambarlı, and the Port of Zeytinburnu—as well as several smaller ports and oil terminals along the Bosphorus and the Sea of Marmara.Haydarpaşa, situated at the southeastern end of the Bosphorus, was Istanbul's largest port until the early 2000s. Shifts in operations to Ambarlı since then have left Haydarpaşa running under capacity and with plans to decommission the port. As of 2007, Ambarlı, on the western edge of the urban center, had an annual capacity of 1.5 millionTEUs (compared to 354,000 TEUs at Haydarpaşa), making it the fourth-largest cargo terminal in the Mediterranean basin. The Port of Zeytinburnu is advantaged by its proximity to motorways and Atatürk International Airport, and long-term plans for the city call for greater connectivity between all terminals and the road and rail networks.
Istanbul is an increasingly popular tourist destination; whereas just 2.4 million foreigners visited the city in 2000, it welcomed 7 million foreign tourists in 2010, making it the world's tenth-most visited city. Istanbul is Turkey's second-largest international gateway, after Antalya, receiving a quarter of the nation's foreign tourists. Istanbul's tourist industry is concentrated in the European side, with ninety percent of the city's hotels located there. Low- and mid-range hotels
