 The town remained small - under 5,000 in population - until the 1990s, when a series of annexations expanded city borders significantly and more than doubled the official population.The 3/4 acre Lyon Creek Park was created in the late 1990s on land purchased by the city in 1998.For the prior fifty years, the lot had belonged to Marcia and Robert Morris, who had built a modernist home and a horse stable on the property.