To answer OP’s question, I’m American but spent a few years in the UK. Things that fascinated me included:

• How green it is (being from Texas this was the first thing that stood out to me)
• The shear amount of history that is just everywhere (I remember eat lunch at a park and reading a sign about how it was the site of a huge battle during the war of the roses)
• Pubs (man I miss going to my local. We really don’t have 3rd places in the US anymore)

I just moved to New England and this will be my first fall here. My property is completely surrounded by 50’+ trees. I’m sure it will get old quick.