Iris Chan Hoi-ling, 14, Leung Shek Chee College: “Enjoy the world’s food in Hong Kong.” This slogan means when you are staying in the city, you can enjoy dishes from different countries.

We had the arch. We just needed a new slogan for it. The city built the original Reno Arch in 1926 to celebrate the completion of the transcontinental highways: the Lincoln Highway and Victory ...