I've been to England a bunch of times, the first being before most of you were born, 1972. New Zealand: twice, once for 5 days, once for 3-1/2 weeks, because the first was so great. I hope to go back to both several more times, no shortage of magnificent things to see!
England, of course, has over a thousand years of history and countless historical sites to visit, besides being beautiful. NZ has less recorded history, but far more awesome geography. In fact, NZ offers pretty much the same geographical palate as the whole US, in a small scale such that you can really get to most of it quite easily. In addition, there are plant and animal species found nowhere else. Not to mention, of course, certain film sites. Lots of them.
I know every other creature in Australia has its own unique venom; is NZ like that too? Or have you kept all those nasties on the other side of the strait?
There's the katipo spider (found in sand dunes if you look very closely) and the white-tail spider, and a few plants - many of the latter introduced (such as daffodils, believe it or not). You'd have to go waaay into the remote hill country to chance across a wild boar. We really are pretty safe with wild animals here - which is why I get wigged out when US board members casually mention the cougars taking pet animals in their neighbourhood.
Although I would love to go back to NZ to see more places. We were there in July and August this year, but there is still so much to see. And NZ is beautiful. England because I haven't visited any Tolkien sites there yet.
... we have this urban legend about cougars here in the eastern part of the US... the legend is we have them. People have seen them.
But of course, officially, the Game Commision sez nope, they only exist out west. (and somewhat endangered) or south in FL (definitely endangered). Yes, they will sometimes grab your small furry pet (but so will our local hawks, great horned owls, and coyotes) as well as possibly stalk you (wolves however, are perfectly safe... moose, not so much).
Nothing to really fear in PA except the random rattlesnake or copperhead, the odd black widow spider, or peeved black bear that someone tried to take a selfie with. My cousin (in Tennessee) was on the job in the field when her party disturbed a young black bear at his lunch. He charged the party, she ducked him using a roller derby move (I kid you not), but he ended up sitting on her until her friends drove him off...
She was also bitten by a rattler on another mission... has a nice belt now.
The closest I got to weird scary stuff was watching two dinner plate sized fins surface at the end of my kayak paddle blade... decidedly cartiliginous fins. Which made the shark about the size of my 18' kayak. Until I observed a few more fins (always in pairs) and realized I was looking at cownosed rays.
We also have a feral pig problem.
But we have cleaned up our environment enough to reintroduce river otters and fisher cats (a honkin big weasel the size of a spaniel).
It's a toss up between the UK and NZ.
I mean, the UK has tardises, Tolkien's resting place, other Tolkien sites, Sherlock Holmes, and a bunch of medieval and pre-medieval architecture.