If you like a variety of images - don't be afraid to mix it up and create an art wall. These can look really effective and give you room a comfortable relaxed feel.
You may also like to add different mediums - try mixing framed art or photography with a cool clock, a stretched canvas or even a hanging plant. Add photos and trinkets from your travels so each item has a story - your story.
Remember choose picture frames or accessories that you love, it is you that gets to look at them the most. It is your space so make sure it is a space you love to be in.