Travel has a way of reminding us how large and fascinating the world really is. For some, that means boarding a plane to Paris, Rome, or Tokyo. For others, it means packing up the car and discovering every secret corner of America they've never seen before. Both approaches have their charm, and both can lead to unforgettable memories. However, they satisfy different kinds of curiosity. Let's list some of the biggest differences between exploring your own country and venturing beyond its borders.