The city center of Melbourne represents the city's cultural, entertainment and financial heart. Locally called the Central Business District, the CBD or simply the City, it is where international and interstate visitors spend the bulk of their time. Most must-see attractions sit within the city's grid-planned center, as is much of the accommodation and nightlife. The main visitor information center is in Federation Square, right near the intersection of Swanston and Flinders Streets. Another information center exists near Cooks Cottage in Fitzroy Gardens, and a small information booth is in the Bourke Street Mall. Additionally, volunteer city ambassadors dressed in a distinctive red uniform are stationed along Swanston St to help tourists with inquiries and directions. The City Centre is Melbourne's hub of public transport. Every train line and most tram routes pass through or terminate in the city. All suburban trains will stop at the city's busiest interchange, Flinders Street Station. Country trains terminate at Southern Cross Station. Trams mostly run east to west along Bourke and Collins Streets, and north to south along Swanston Street.