Atlas Obscura is one of the largest, most well-known and most impeccably awesome archives of amazing places, foods and experiences in the world.
Here is their list of places to go in the Grand Canyon State, Arizona. Featuring such sites as Havasupai Falls, a bright blue oasis in the middle of Grand Canyon National Park; Biosphere 2, a giant facility featuring just about every biome on the planet; and Lake Havasu's London Bridge, which was moved across the sea from London to an Arizona town. How many of these awesome places have YOU been to?
Note: Some of these you cannot visit or see anymore, which have been marked with (Permanently Closed). So therefore, if you haven't already seen them, I don't know if you'll ever be able to completely finish this list.
Note 2: This is as of September 4, 2023. Sorry future people, there will definitely be more that can't be added.