Carrying around a big backpack and taking pictures of everything you see are definitely two ways to look like and travel like a tourist! LOL
Wearing Sneakers Everywhere
Looking At Maps
Having Selfie Sticks Handy
Looking Confused
And more here: https://www.redbookmag.com/life/g27499617/travel-habits-that-scream-tourist/
Is this YOU when you travel!?