Copa Diner and Bar

You're walking past the castle, turning onto Castle Square, and Copa pulls you in with those big windows and that unmissable retro diner aesthetic. It's all red vinyl booths, chrome fixtures, and that transatlantic swagger that actually works in Caernarfon rather than feeling try-hard. The menu leans into proper comfort food—burgers that don't mess about, decent cocktails, and the kind of place where you can rock up for a casual drink or settle in for something more substantial. The crowd's a mix: locals propping up the bar, groups celebrating, couples on dates. It's been pulling consistent numbers for good reason.