As your neighbor from the North (Romania) I highly recommend visiting the general Central and Eastern European area.

In the last few years we’ve been to Prague, short stay in Vienna, Bratislava, Ohrid (spent a night in Pernik on the way there, which I count as part of the experience) and I’d also put Athens and Southern Greece/the Peloponnese on the list (even though it’s not Eastern nor Central European). All very interesting and beautiful places in their own way (yes, even Athens), I highly recommend them.

all good recommendations. I needed some encouragement. Thank you.

It's blowing my mind you willingly went to Pernik, though.