No further alterations were made, except that, in 1681, Charles effected an exchange of land with the Earl of Arlington, on which, a few years later, Arlington Street was built. The path which runs parallel with the backs of these houses was Queen Caroline’s idea, and she used it frequently herself, and it became known as the “Queen’s Walk.” The houses overlooking the Park went up in value as the occupants could enjoy the sight of the Queen and the Princesses taking their daily walk. The line of this path is no longer the same, as a piece was cut off the Park in 1795 and leased to the Duke of Bridgewater to add to the garden of his house. The Queen also built a pavilion known as the Queen’s Library in the Park, where she spent some time after her morning promenades. Although Queen Caroline took to the Upper Park, the world of fashion did not follow at once, and it was not until about 1786 that the Green Park for some reason suddenly became the rage. The only incident of historic interest between this date and the making of the road was the celebration of the end of the War of Succession in the spring following the Peace of Aix-la-Chapelle. A great pavilion like a Doric temple, 410 feet long and 114 feet high, was erected near the wall separating the Green Park from St. James’s, and on the 27th of April a grand display of fireworks was arranged. A fire, however, broke out just as the performance was beginning, when a grand overture composed by Handel had been performed, and the King and dense crowds were watching the illuminations. The flames were got under, but not before much of the temporary building had been destroyed, and the greater part of the fireworks perished in the flames, and several fatal and serious accidents further marred the entertainment.