 White City was the third of the three Indianapolis amusement parks to have opened (Riverside Amusement Park unveiled its mechanical rides in 1903, while Wonderland had its grand opening a week before White City in 1906), and the competition amongst the three trolley parks was intense for the brief existence of White City.The three parks battled for newspaper space in 1906, buying advertising on a regular basis to tout the parks' (especially Wonderland and White City) "newest attraction".At that time, it became evident that, despite the continuing popularity of the three parks, Indianapolis could not sustain all three as the nationwide amusement park boom started to subside in the latter third of the first decade of the twentieth century.