Architect-turned-urban-sketcher Joo Mosa turns city streets into loose, ink-wash stories, pairing quick line work with bite-size history nuggets that feel like a stroll with a witty local guide. Whether demystifying perspective or revealing hidden Seoul gems, the feed blends relaxed tutorials, process reels and candid field notes that invite both rookies and pros to grab a pen and look up more. Warm, lightly self-deprecating captions spark lively threads, while monthly “sketch challenges” showcase community wins, proving Joo’s gift for making on-location drawing feel doable anywhere. Seoul sketcher Joo Mosa distills architecture and alleyway tales into breezy ink demos, rallying a growing community to draw their own cities with humor and zero pretense.