St. James's Hall was a concert hall in London that opened on 25 March 1858, designed by architect and artist Owen Jones, who had decorated the interior of the Crystal Palace. It was situated between the Quadrant in Regent Street and Piccadilly, and Vine Street and George Court. There was a frontage on Regent Street, and another in Piccadilly. Taking the orchestra into account, the main hall had seating for slightly over 2,000 persons. It had a grand hall 140 feet (43 m) long and 60 feet (18 m) broad, the seating was distributed between ground floor, balcony, gallery and platform and it had excellent acoustics. On the ground floor were two smaller halls, one 60 feet (18 m) square; the other 60 feet (18 m) by 55 feet (17 m). The Hall was decorated in the 'Florentine' style, with features imitating the great Moorish Palace of the Alhambra. The Piccadilly facade was given a Gothic design, and the complex of two restaurants and three halls was hidden behind Nash's Quadrant. Sir George Henschel recalled its 'dear old, uncomfortable, long, narrow, green-upholstered benches with the numbers of the seats tied over the straight backs with bright pink tape, like office files.'

Owen Jones was a British architect. A versatile architect and designer, he was also one of the most influential design theorists of the nineteenth century. He helped pioneer modern colour theory, and his theories on flat patterning and ornament still resonate with contemporary designers today.