It is impossible here to describe in detail the architectural features or the marvellous contents of the great Machinery Hall. It is one of the most splendid structures on the grounds, measuring 850 by 500 feet in ground area, and standing at the extreme south end of the Park, just south of the Administration Building, and west from the Agricultural Building, from which it is separated by a lagoon. The general design of its interior is that of three enormous railroad train houses side by side, each spanned by trussed arches, and surrounded on all four sides by a gallery, 50 feet wide. The bulk of the machinery exhibited will be placed in this edifice and its large annex. The building devoted to displays of Manufactures and Liberals Arts is the largest of all. Its ground area measures 1,687 by 787 feet, or nearly 31 acres. Within a gallery 50 feet wide extends around all the four sides, and projecting from this are 86 smaller galleries, 12 feet wide. These are reached from the main floor by 30 staircases, each 12 feet wide. An aisle 50 feet wide, called Columbia Avenue, extends from end to end of the building, and a transept of similar width crosses it at the centre. The main roof is of iron and glass, and its ridge pole is 150 feet from the ground. It covers an area 1,400 by 385 feet. The actual floor space of the building, including galleries, is about 40 acres. The general style of architecture is Corinthian, with almost endless arrays of columns and arches. There are four great entrances, one in the centre of each façade. These have the appearance of triumphal arches, the central opening of each being 40 feet wide and 80 feet high. Above each is a great attic story, ornamented with sculptured eagles 18 feet high. At each corner of the building is a pavilion with huge arched entrances corresponding in design with the principal portals of the building. This stately edifice faces the lake, with only lawns and promenades between it and the water. North of it is the United States Government Building, south of it the harbor and injutting lagoon, and west of it the Electrical Building and the lagoon separating it from the great island.