 Complete the following phrase:  In 1763, Governor Hans Henrik Böje rented a plot of land from the city of Helsinki bordered by Hämeen maantie nowadays Siltasaarenkatu and started a garden on it. In 1773, control of the garden was handed over to gardener Erik Edbom. When Helsinki became the capital in 1812, the garden became a municipal garden. Later on, in 1827, work on transforming the garden into a walking area for the denizens of Helsinki commenced according to plans drawn up by Carl Ludvig Engel. His plans divided the park into two distinct areas: a symmetrical, tree-lined park and a landscaped garden formed by winding paths. In 1829, the walking area was pared back once the Imperial Academy of Turku Botanical Garden moved next to it after the 