The basic idea of a hotel is simple: give the guest a bed, and put that bed (and, I guess by extension, that guest) in a safe place. Over the centuries, this simple tenet has blossomed into a multibillion-dollar industry, giving the weary adventurer and savvy traveler alike a place to rest, relax, and recharge. But what is truly amazing in the modern hotel world is how varied and unique the modern place of lodging can really be.