Whether we consider London as the metropolis of a great and mighty empire, upon the dominions of whose sovereign the sun never sets, or as the home of more than three millions of people, and the richest city in the world to boot, it must ever be a place which strangers wish to visit. In these days of railways and steamers, the toil and cost of reaching it are, comparatively speaking, small; and, such being the case, the supply of visitors has very naturally been adjusted to the everyday increasing opportunities of gratifying so very sensible a desire. To such persons, on their arrival at this vast City of the Islands, we here, if they will accept us as their guides, beg to offer, ere going into more minute details, a