 Beyond the edges of these landscaped areas, the escarpment remains in its natural state.Though Parliament Hill remains the heart of the parliamentary precinct, expansion beyond the bounded area described above began in 1884, with the construction of the Langevin Block across Wellington Street.After land to the east, across the canal, was purchased by private interests (to build the Château Laurier hotel), growth of the parliamentary infrastructure moved westward along Wellington, with the erection in the 1930s of the Confederation and Justice Buildings on the north side, and then further construction to the south.