It would probably be New York City, known as "the city that never sleeps" because of its round-the-clock urban activity.
There are many other cities in the world which are extremely busy: London, Mumbai, Tokyo, Shanghai, and Hong Kong carry on a high degree of urban activity and commerce.
Mexico City. With 21.16 million inhabitants (ranked 3rd in the world), it is probably the busiest city in the Americas.
atlanta
Rotterdam
Auckland city museum in New Zealand.
the busiest city would either be New York or Hollywood.
911👎
Aberdeen Airport has the world's busiest commercial helicopter operations.
Marseille is the busiest port in France, and the busiest port on the Mediterranean sea, and the third-busiest in Europe.
Boston
the busiest port in the world is
kochi and thiruvananthapuram (state capital) are the busiest cities of kerala.
The North Atlantic Ocean Route is the busiest trade route in the world.