A central business district (CBD) is the commercial and business center of a city. In larger cities, a CBD is often synonymous with the city's financial hub. Geographically, it usually coincides with the city center, or a downtown zone. And nearly always, a CBD is representative of modern, cutting-edge architecture that is visually stunning in grandeur and characterized by gleaming skyscrapers of astonishing height and contemporary aesthetic.
The City of London contains the British capital's historical quarter and its primary central business. Noteworthy buildings set within the "Square Mile" include 30 St Mary Axe, referred to as The Gherkin, and 122 Leadenhall Street, known also as The Cheesegrater.
Hong Kong's Central District encompasses its central business district and is set on the north shore of Hong Kong Island. Notable buildings dominating the skyline include the Bank of China Tower and Cheung Kong Center.
Tokyo boasts several prime business districts, including Nishi-Shinjuku. Some of Japan's biggest corporations have their headquarters here, housed in premises such as the Sompo Japan Building and the Mode Gakuen Cocoon Tower.
Singapore's central business area is simply called Central Area, and surrounds the banks of the Singapore River and Marina Bay. Part of the neighborhood is also referred to as the Marina Bay Financial Centre, a tower complex that houses, among other international banking and financial institutions, Standard Chartered Bank, IBM, and Servcorp.
The super tall China World Trade Center Tower III is among several skyscrapers that loom large over Beijing's central business district. The irregular shaped China Central Television headquarters is also found here.
São Paulo's Central Zone is one of the largest commercial and business districts in South America. The Brazilian city's busy Paulista Avenue serves as the location for the headquarters of many financial and cultural institutions. Incidentally, one of Brazil's tallest buildings, Edifício Itália, stands in the Central Zone.
Among Seoul's three principal business districts is Yeouido. Set on an island, this is the South Korean capital's main finance and investment banking district. The Federation of Korean Industries Head Office Building is among the skyscrapers seen here.
Shanghai's futuristic Lujiazui skyline is one of the most photographed of China's urban landscapes. This is the city's financial hub, and it's distinguished by a collection of iconic towers such as the Shanghai World Financial Center and Jin Mao Tower.
The Dubai International Financial Centre (DIFC) emerged as the city's swanky new business district in 2004, and now serves as a major financial hub for Middle Eastern, African, and South Asian markets. Pictured is The Gate, DIFC's monumental portal.
Frankfurt's Bankenviertel is the most important financial center in Germany and one of the largest in Europe. Bank of America is one of the tenants occupying the Main Tower building.
The Loop is the central business district of Chicago and is the main section of the city's downtown area. The area has long been a hub of historical and contemporary architecture, exemplified by premises such as the 1930s-era Chicago Board of Trade Building and the Willis Tower (formally the Sears Tower and once the tallest building in the world).