Answer:
The best answer to the question: What physical feature of the landscape has become the largest tourist draw in Megalopolis, would be: The beaches.
Step-by-step explanation:
Although this term is broadly used to define cities whose metropolitan characteristics make them very similar to one another, and therefore, could be almost taken as one super city, there are several such groupings not just in the U.S, but also in other parts of the world.
In this case, we are going to talk about the one known as the Northeast Megalopolis, or the Boston-Washington grouping of cities that go from Boston, to Virginia. The main physical characteristic that joins these cities together, would be the fact that they are all placed near the Atlantic Ocean, and all of them have beaches. These beaches have become a really important and large tourist draw towards this, the second largest megalopolis in the U.S, with above 50 million inhabitants there alone.