Catherine had another specific task for Cameron: she envisaged a new, relatively modest Neoclassical building in Tsarskoye Selo near the older Rococo Catherine Palace. Clerisseau, Catherine's first choice, produced drafts for a gigantic and expensive Roman structure based on the Baths of Diocletian, that were rejected out of hand but later influenced Quarenghi and Cameron. In 1782 Cameron started his first standalone building, the Cold Baths, a two-story bathhouse in mixed Italian-Greek classicism with luxurious interiors (notably the Agate Pavilion). In 1784–1787 it was expanded with a two-story gallery ("Cameron's Gallery"), mixing natural stone Roman ground floor with a lightweight, snow-white upper floor gallery marked with unusually wide spacing between columns. The gallery, adorned with statues of foreign poets and philosophers, became Catherine's favourite promenade for years. It was flanked with a formal garden on one side and an English landscape park on the other.