London Colosseum

The panorama was based on drawings Hornor had made from the vantage point of a temporary hut placed at the top of the dome of St Paul's Cathedral, while the cross and ball were being replaced in 1821–2.

Hornor engaged several artists to assist Parris in the undertaking, but progress was slow and unsatisfactory due to their unfamiliarity with the type of work required.

The painting was the largest ever created, totalling over forty thousand square feet in area, and a testament to Parris's great artistic skill, talent, and perseverance.

It was remodelled by William Bradwell, former chief machinist of the Covent Garden Theatre, who added an eastern entrance in Albany Street, and an arched corridor inspired by one at the Vatican.

Instead of calico draperies "which had the appearance of a tent hastily fitted up for some temporary purpose", the visitor was promised " a lofty dome, of several thousand feet of richly cut glass."

The frieze of the Glypoteca was decorated with a copy of the Panathenaic procession from the Parthenon, modelled by Mr Henning, Jr, above which were twenty allegorical fresco paintings by Mr. Absalom.

The lift, described in the brochure as "the Ascending Room", capable of containing ten or twelve persons, which is raised by secret machinery" was now decorated in the Elizabethan style, and illuminated by stained glass windows.

Another attraction was the "Chalet or Swiss Cottage" from the window of which the visitor could look at real waterfalls, against the background of the Mer de Glace and Mont Blanc, as painted by Mr Danson.

Painted by Danson and Telbin, light effects projected by William Bradwell were intended to provide a realistic vision of the city at night.

Subsequently the lease was purchased by a Mr. Bird, and the walls were levelled to the ground, as stated above, with the view of erecting on its site a number of private residences.