On 8 November 1842, an executive committee with the power to choose a design and begin construction of the monument was formed in Newcastle. In May 1843, the committee met to consider new designs that it had received, and decided to recommend John and Benjamin Green's proposal of a Grecian Doric temple to subscribers. By July, the design had been officially selected. The Greens were father and son, and also designed Grey's Monument and the Theatre Royal in Newcastle. The initial design was in the style of the temples of Paestum, with an arrangement of four by six columns; this was later changed to one based on the Temple of Hephaestus. It was envisaged that the hill would become an enclosed pleasure garden after the monument's construction.