A good library should let you travel in space, to anywhere you want to go. Mine lets me travel to almost anywhere on Earth, as well as many places that aren't on Earth at all: the Moon, the planets, the stars, and even further.
Books about Nature and Wildlife
In addition to being interested in life of the past, I'm interested in life of the present. So I have a large number of books about nature and particularly animals. I've accumulated a number of books about two or three groups of animals that I think are especially interesting:
I also have a lot of more general books about animals and nature. For example:
I have a whole shelf full of field guides to animals and plants.
Two more shelves are occupied mainly by my collection of books from The National Geographic Society.
Several books are specifically about African wildlife, while others focus on North American wildlife.
Some are about ecology and ecosystems, how they work and how humans can ruin them, even with the best of intentions. On the other hand, there are also a few about how carefully planned actions by humans can help rescue damaged ecosystems.
And some cover huge swathes of the natural world.
In addition to my nature books, I have a number of books about the sciences: physics, chemistry, astronomy, etc. Another shelf holds a number of books about space travel. There's also a shelf devoted exclusively to the writings of Isaac Asimov.
