What style for the icon do you prefer, is it flat style or 3D?
Some 3D to make it "pop" might be good, but not excessive. We don't have to go as flat as apple these days, and would like some level of pop that other popular apps get away with.
Do you have any idea of what Icon style would you like, the iOS 9 style like the latest Instagram and other Apple iOS icons or something different?
We actually quite dislike the latest iterations of the Instagram and Hyperlapse icons. It is generally our corporate philosophy to fit in, but not TOO much.
The first five attachments are from the app onboarding.
All three things are difficult to achieve: Camera; Landmarks; People removal. An icon will one day be ~ 15 mm x 15 mm on an iPhone screen, so it can't be too complex. Our preference is for an icon that conveys all three, but if we had to pick only two, it would be Camera and Landmarks.
Here are some links to some 99designs entries that we liked:
Attached to the brief is a collage of icons that we like.
Attached to the brief are also some vector art of landmarks that we sourced from openclipart that is licensed for commercial use and you can use in your designs.