The great number of immensely tall office-buildings on lower Broadway, literally "sky-scrapers," so encompass the street as to give it the appearance of a deep canyon as one gazes along it between them. The Bowling Green Building out-tops the Washington Building, and there are the Welles, Standard Oil and Aldrich Court Buildings, the latter marked by a tablet of the Holland Society, being erected on the site of "the first habitation of white men on Manhattan Island." Opposite it is one of the most curious appearing of these tall structures, the Tower Building, nearly two hundred feet high and only twenty-five feet wide. Just above, the tall light sandstone building of the Manhattan Life Company is surmounted by a cupola three hundred and fifty feet high. The Empire Building rises twenty stories, and the American Surety Building at the corner of Pine Street, nearly opposite Trinity churchyard, twenty-three stories, three hundred and six feet, being surmounted by the various weather-gauging instruments of "Old Probabilities." Here are also the magnificent buildings of the Union Trust and the Equitable Life Companies. Opposite Trinity Church, Wall Street leads off from Broadway, with winding course and varying width, down to the East River, following the line of the ancient Dutch palisade wall which it has replaced. Here is the financial centre and the domain of the bankers. One block down, Broad Street enters from the south, and the narrower Nassau Street goes out to the north. At this corner, on the one hand, is the white marble Drexel Building, Mr. J. Pierpont Morgan's office, and on the other the United States Treasury and Assay Office. The huge Manhattan Trust Building also is there, rising three hundred and thirty feet, and opposite is the Stock Exchange, while across Broad Street from the latter is the Mills Building, the home of many bankers and brokers. In Nassau Street is the magnificent building of the Mutual Life Insurance Company. These financial structures at Broad and Wall Streets are regarded as the most valuable real estate in the world. The Treasury and Assay Office contain most of the gold owned by the Government, and in the latter the kegs of gold are made up that are shipped to Europe. It holds millions of gold bars that make annual excursions in fast steamers across the ocean and back again, to adjust our varying foreign exchange balances. The Treasury is a white marble building fronted by an imposing colonnade and a broad flight of steps, and here is a bronze statue of Washington on the spot where he was inaugurated the first President of the United States in 1789, the location being then occupied by the old Federal Hall, where the first Congress met. Farther down Wall Street, the next corner is William Street, where there is a massive dark granite building with an elaborate Ionic colonnade. The interior contains a large rotunda surmounted by a dome supported by eight immense columns of Italian marble.