When my relatives from Denmark come over to tour the US, they always remark on how VAST this place is. We spent the day in a park — one park — that covers about 15% of the land of the entire country of Denmark.

Having lived on both sides of the pond, I think the main difference is that our woods (both Denmark and the UK) are so "managed and tended" compared to the States where you can still find truly primordial lands nobody has ever seen or set foot on.