What city today is Troy?

Can you clarify for me, if Troy is a city that exists today, and if so, which city would it correspond to? I'm curious to know if the ancient city of Troy, known for its legendary Trojan War, has a modern-day counterpart or if it simply remains a historical site of interest. Additionally, if there is indeed a modern city that carries the name Troy, I would like to know where it is located and what it's known for in the present day.