clever photo scavenger hunt riddles for ages 19-35 for a birthday party?

[Gaia I]

Its my birthday and im putting on a scavenger hunt for me and my friends about 15-20 people. long time ago back when i was in youth group we did a photo (video) scavenger hunt. i need different kinda of riddles to make it fun and exciting places they need to go and find.and things they need to do, all while taking a photo of it. PLEASE HELP I NEED THEM ASAP