Hidden gems: most underrated destinations you've been to

Okay I’m curious. What’s a place you visited that completely exceeded your expectations because you’d barely heard of it before going? I feel like every “hidden gem” article just lists the same 10 places that aren’t really hidden anymore (looking at you, Hallstatt).

I want the real ones. Places where you showed up not knowing what to expect and left thinking “why isn’t everyone talking about this?” Any continent, any budget. Just genuinely surprising.