Port of Spain a shopping and business centre for much of the country. Most government offices are also located in the city and many important government services can only be accessed in the Ministry offices located downtown. Within recent years, local banks headquartered here have helped it become a financial centre for the Caribbean and Central America region. Two of the largest banks in the Caribbean, Republic Bank, Trinidad and Tobago Limited and Royal Bank of Trinidad and Tobago (RBTT, reacquired by the Royal Bank in 2008) are headquartered here or base their Caribbean operations in the city. Trinidad's economy is based on
Port of Spain suburbs. In addition to the official population, the adjacent East–West Corridor conurbation has a population close to 600,000 people and the "big city" feel with its suburban car dominated commuting. The corridor is the built-up area of north Trinidad stretching from the capital, Port of Spain, east to Arima. It includes the towns of Barataria, San Juan, St. Joseph, Curepe, St. Augustine, Tunapuna, Tacarigua, Arouca, and Five Rivers, once distinct communities and now districts within a continuous urban area. For the most part it runs along the Eastern Main Road, between the Churchill–Roosevelt Highway and the foothills of the Northern