There are places we have visited and places we would like to visit. Of course, there are a million other great places there, but these are the only ones we know about.
We lived in Copenhagen, DK for 6 months many years ago and explored Denmark, a little of Sweden and London without a car. If we ever win PowerBall, we would move to Denmark in a New York minute. We love the country. We fit in well there and were warmly accepted. YMMV. We have friends in DK and the UK. DK is
unholy expensive, however.
We enjoyed Prague. It bears further exploration.
London is also great but expensive. ("When a man is tired of London, he is tired of life!") We could stay a long time in Edinburgh or Glasgow. We have a small advantage in that we can understand Scottish.
Be aware that the UK is NOTHING like you see on BBC, however.
T'bilisi, Georgia was interesting, but somewhat primitive. We would go back again (in fact, I am applying for a job there).
We would like to visit Vienna, Austria; Tallinn, Estonia; Lviv, Ukraine and Pilzen, Czech Republic. The Dalmatian Coast looks interesting, but I have an idea that it may also be somewhat primitive. Worth a look. It looks like a beautiful part of the world.
Paul and Vicki Terhorst recently visited Lviv
Crossing The Border From Poland To Lviv, Ukraine | Live and Invest Overseas
and observed, "We could live here!"
I would like to see Cyprus and Malta, but DW may not be so interested. One cannot just get on a train and see more Europe.
Have a good trip. Please give us an account when you get back.