The Empire State Building in New York, New York.
"I wanted to become an architect since I was six years old in part because of this building," says William J. Martin. "My parents would put us in the car and drive down River Road and Boulevard East [New Jersey] with expansive views of Manhattan from the back seat of our car. The antenna enhanced the value of the building ... by allowing for better reception for millions of people."
Martin is the founder of WJM Architect.