This coastal military fort near Brunswick, Maine is definitely worth the drive. Not only can you explore the dark hallways and rooms of this abandoned fort, but you're also a short walk from the beach.
This story is exactly why I only like so much nature. I'll marvel at it as long as I don't have to navigate it, sleep in it or worry about surviving it. A local Freehold family was recently rescued after getting lost on a mountain hike in Maine.