The Great Wall of China is a series of fortifications made of stone, brick, tamped earth, wood, and other materials, generally built along an east-to-west line across the historical northern borders of China in part to protect the Chinese Empire or its prototypical states against intrusions by various nomadic groups or military incursions by various warlike peoples or forces.
Honolulu, in real life you see a lot of the homeless on the beach at night. Some sleep under the palm trees by the shopping areas. Ride around the island and you will get a feel for how many poor there are by the number of run down homes. You will also learn very few stores and shops have public restrooms. They are limited to sit down diners/amusement areas. Bring hand sanitizer/tissues. Forget gas stations, small shops, and takeout places. Fairly dirty and more graffiti than expected.