Handle: 13thWitness

Followers: 8,600

What to expect: NYC-focused scenery (bridges, buildings, beaches) with emphasis on pattern 

Why you should follow: If you have a thing for architecture and appreciate the repetition found in man-made structures (think stairs, windows, columns), this dude's photos are superb and even borderline sublime. Nike also recently named him as the first guest photographer for their Instragram #makeitcount campaign.