One of the most beautiful lakes I have ever seen is in the western section of Glacier National Park in Montana. The western side of the park is deeply wooded and lush (unlike the dry, mostly prairie-like eastern side), which makes the lake feel both insulated and hidden. The photo shown here, which was taken in the mid-1990s, shows an eastward view of Lake McDonald from the tiny village of Apgar, about 20 miles east of Whitefish as the crow flies.For a larger version of this photo, go to the Lake McDonald, MT photo on the Travel Guide of America site.
Even though Boston is a large city with a good amount of sprawl, you don't have to go too far to find some really wild and remote areas. One example of this is Bigelow Hollow State Park, which is just over the border in Union, Connecticut (near Sturbridge), about an hour away from Beantown. The photo shown here, which was taken in October of 2006, shows the very bucolic Bigelow Pond, which is surrounded by low hills and has hiking trails running alongside it, as well as in the deep woods nearby. 
Even though Portland, Maine, is a cosmopolitan city with a striking skyline and a real urban feel to it, you don't have to drive far to get into some truly rustic areas. Sebago Lake, for instance, is less than 20 miles from Portland, yet feels like it could be in the great North Woods of Maine. The photo shown here, which was taken in June of 2006, shows the mostly unspoiled southwest shore of Sebago lake near the tiny town of Sebago.
Cape Cod is a very scenic place in spots, but not all of the scenery is along the coast. The inland sections of the Cape (including areas around the Cape Cod Rail Trail) have a beauty all their own. This photo, which was taken on a late-fall day from the rail trail in Harwich, shows some of the beauty of the mostly unspoiled interior of the Cape. It shows Long Pond at sunset, with the moon high up in the sky and just starting to get bright. 
When people think of scenic areas in New Hampshire, they often think of the Kancamagus Highway that cuts through the middle of the White Mountains. But to me, the scenes around Franconia Notch (just north of the western end of the Kancamagus) are every bit as jaw-dropping, if not more so. The picture here, which shows part of the spectacular Franconia Ridge, was taken on a cool summer day in 2005 from a parking area off Routes 3 and 93.