Where to begin? But to throw out a few that might not be included in other lists, and are definitely NOT from flat Florida:
Crescent Lake in the Olympic Peninsula, Washington State. I motorcycled around this so many times my bikes knew the way without me:
Mount Rainier, also in Washington near Seattle. I often rode up this on my motorcycle, as far as the road would go. In summer the pavement was clear & dry, the air warm enough to ride, but permanent snow was all around you, a strange experience.
A human creation, Radio City Music Hall in NYC, that I first attended in 1954. Now approaching 80-years-old, its Art Deco stage amazingly remains one of the most advanced & incredible in the world, and certainly one of the largest ever built at 150 feet across. Its seating capacity of approx. 6000 currently makes it the largest indoor theatre in the world. My only complaint is the hanging of modern concert lighting & sound equipment from the elegant ceiling coves, that were originally meant to hide all the lighting. (This pic from the 4th mezzanine may exceed your browser window size, so drag or copy it into another viewer)
I love hardwood forests, where I spent much of my youth, another thing that doesn't exist in Florida. Here is my ex-BF on his logging property, with his land manager. It was very hot, humid & buggy this day, despite being in Minnesota. My ex removed his shirt, but draped a heavy Turkish towel over himself, that was impervious to mosquitos.
He recently told he he wants to build a $40k+ primitive treehouse on this land, as a weekend retreat, and he emailed me some pics for my opinion. This is the model I chose, the site he picked also being near water: