The chief building was the Pump Room, on the south side of the street, near where the entrance to Gainsborough Gardens now is. The first recorded entertainment here was on August 18, 1701, when a concert was given. Concerts and entertainments of various kinds were kept up during the season. There was a bowling-green near. This house dated from about the beginning of the eighteenth century. In 1733 it was converted into an episcopal chapel, and was so used until 1849. There was another chapel called Sion Chapel in the vicinity, though its exact situation is unknown; here couples could be married for five shillings, provided they brought with them a license. The license was not always insisted on. The Pump Room was later used as a guard-room of the West Middlesex Volunteers, and was pulled down in 1880 to make way for the road above mentioned. It was then discovered by the intervening wall that the adjacent house was of still older date, and it is thus proved to be one of the oldest remaining in Hampstead. It has a graceful spindle porch and delightful old-world air, though the side adjoining Gainsborough Gardens has been refaced. Just opposite is a solid drinking fountain of polished granite, with inscription to the effect that it is in memory of Susanna Noel's gift, and here the chalybeate waters may still be tasted. One or two old houses are on the northern side of the Walk, and one of these, a long, low, red-brick edifice called Weatherhall House, deserves special notice. It contained the Long Room where dances and assemblies were held, and even after the fame of the waters declined it still held its place. Perhaps this is the room referred to by Seymour as having been built in 1735. He describes it as "60 feet long and 30 feet wide, well adorned with chandeliers. The manner of being admitted into it is by a ticket, of which every gentleman who subscribes a guinea for the season has one for himself and two more for two ladies; all those who have not subscribers' tickets pay 2s. 6d. each at the entrance every night. And Sunday nights in the same room is an assembly where the gentlemen and ladies who lodge in the town are entertained with tea and coffee at sixpence per head, but no other amusements are allowed on these nights." Here Mrs. Johnson came, and Mark Akenside, poet and physician of the eighteenth century; Dr. Arbuthnot, friend of Swift, a man ranked high among the wits of his day, and holding the appointment of physician to Queen Anne; Fanny Burney, and many others. The house is now a private residence. Standing further back from the road behind a quadrangle is Burgh House, also old. This was at one time used as a militia barracks, at which time (1863) the two solid wings adjoining the road were erected. Burgh House is now a private residence, and the cells where insubordinate soldiers were confined are converted into the drying and mangling rooms of a laundry.