The Soane Museum is further westward, and is differentiated from two similarly built neighbours by a slightly projecting frontage. It was the former residence of Sir John Soane, who left his collection to the nation. There are many valuable pictures, as well as curious and interesting objects. The museum is open free to the public on Tuesday, Wednesday, Thursday, and Sunday. On the west side of the square, near Queen Street, stands a very solid mansion, known first as Powis, then as Newcastle House. The footway in Great Queen Street runs under an arcade on the north side of this house, which was built by the first Marquis of Powis, created Duke of Powis by James II., whom he followed into exile, and bought in 1705 by Holles, Duke of Newcastle, whose nephew, who led the Pelham Administration under George II., inherited it. Further south on the same side is Lindsey House, a large building with pilasters; this was built by Robert Bertie, Earl of Lindsey, and was later called Ancaster House. It was described by Hatton as a handsome building, with six spacious brick piers before it, surmounted by vases and with ironwork between. Only two of these vases remain. The fleurs-de-lis on the house over the Sardinia Street entry were put up in compliment to Queen Henrietta Maria, who was the daughter of Henry IV. of France. The third great house on this side was Portsmouth House, over Portsmouth Place. The remainder of the houses have the same general character of stuccoed and pilastered uniformity, broken here and there by uncovered brick surfaces or frontages of stone. They are almost uninterruptedly occupied by solicitors. This is the oldest side of the square, being that built by Inigo Jones. At the south corner of the square there is a quaint red-brick, gable-ended house, with a bit of rusticated woodwork. This is all part of the same block as the Old Curiosity Shop, supposed to be that described by Dickens. On the south side rises the Royal College of Surgeons. The central part is carried up a story and an entresol higher than the wings, and, like the wings, is capped by a balustrade. The legend, "AEdes Collegii Chirurgorum Anglici--Diplomate Regio Corporate A.D. MDCCC," runs across the frontage. A massive colonnade of six Ionic columns gives solidity to the basement. The museum of this college has absorbed the site of the old Duke's Theatre. Its nucleus was John Hunter's collection, purchased by the college, and first opened in 1813. This side of the square is outside our present district. (See _The Strand_, in the same series.)