New York - America's Busiest City

Anita Rani, Ade Adepitan, Ant Anstead and Dan Snow reveal the behind-the-scenes operations responsible for keeping the world's biggest railway terminal, Grand Central Terminal, running on schedule.

Anita Rani, Ade Adepitan, Ant Anstead and Dan Snow visit the New Fulton Fish Market in the Bronx, and Ade discovers that New York State produces 600,000 tons of apples, more than 2.5 times Britain's entire production.

In New York City's Central Park, Anita Rani, Ade Adepitan, Ant Anstead and Dan Snow reveal the hidden systems that keep the world's busiest urban park clean and green. Then Ade heads to Harlem to explore gentrification.