Many observers consider Millennium Park to be the city’s most important project since the World’s Columbian Exposition of 1893. It far exceeded its originally proposed budget of $150 million. The final cost of $475 million was borne by Chicago taxpayers and private donors. The city paid $270 million; private donors paid the rest, and assumed roughly half of the financial responsibility for the cost overruns. The construction delays and cost overruns were attributed to poor planning, many design changes, and cronyism. Many critics have praised the completed park.