 By the late 20th century, the Rova's structures had been reduced to eleven, representing various architectural styles and historical periods.The largest and most prominent of these was Manjakamiadana, also known as the "Queen's Palace" after Queen Ranavalona I, for whom the original wooden palace was built between 1839–1841 by Frenchman Jean Laborde.In 1867 the palace was encased in stone for Queen Ranavalona II by Scotsman James Cameron, an artisan missionary of the London Missionary Society.