Seoul’s Jongno 3-ga has gone from cool to coolest, taking the No. 1 spot on Time Out’s list of the world’s coolest neighborhoods in 2026 after ranking third five years ago. The historic downtown neighborhood was praised for its mix of old Seoul and new energy, from late-night food stalls, or "pocha," to independent businesses and traditional Korean houses, or "hanok." Time Out said Jongno 3-ga has only grown cooler since its previous appearance,…