Before Idora Park, the land along the north banks of Temescal Creek was an informal gathering spot called Ayala Park. The Realty Syndicate saw greater potential. In 1903, they constructed an elaborate trolley park on the site - a common business model of the era, in which streetcar companies built amusement destinations at the end of their lines to generate weekend ridership. The Ingersoll Pleasure and Amusement Park Company, which operated several parks back East, leased the grounds. What opened in 1904 was more than a few rides and a picnic table. The walled compound held a zoo, an ostrich farm, a bear grotto, a Japanese garden, a dance hall, a racetrack, an outdoor amphitheater, and the largest roller skating rink west of Chicago. A bandstand sat at the rink's center, and on summer evenings the music carried across Temescal Creek.

Idora Park collected firsts the way some parks collected ticket stubs. It boasted the first outdoor public address system, built with the largest horn loudspeaker Magnavox had ever produced. It hosted the first radio theater in the West. Its searchlight, Victrola tower, and roller rink were each claimed to be the largest of their kind. Some of these boasts were marketing; all of them captured the park's appetite for spectacle. The Oakland Tribune reported that both Charlie Chaplin and Buster Keaton honed their skating skills at the Idora rink - a detail that hints at the park's reach into the broader world of early twentieth-century entertainment. Frank and Carrie Hamilton parachuted from hot-air balloons above the grounds, and on Saturday nights the Mountain Slide ignited its firework volcanic display while families watched from the Glad Way below.

On April 18, 1906, the San Francisco earthquake sent shockwaves across the bay. As many as 2,500 displaced people found shelter inside Idora Park's walls, fed with supplies the Realty Syndicate purchased from Capwell's Department Store. The disaster reshaped the park in unexpected ways. Comic performers from San Francisco's Tivoli Theater, suddenly without a stage, relocated to Oakland and reinvented themselves as the Idora Park Opera Company. Under theater director Ferris Hartman, with Paul Stiendorff conducting, they staged Gilbert and Sullivan favorites - The Mikado, The Pirates of Penzance, The Wizard of the Nile - in the Wigwam Theater. A 3,000-seat double-deck grandstand ballpark had been erected in 1904, and after the earthquake the Pacific Coast League played there too. For a brief period, Idora Park was not just an amusement destination but a cultural lifeline.

Trolley parks lived and died by the streetcar. When automobiles gave Bay Area residents the freedom to travel farther for their entertainment, the parks that depended on captive transit riders began to struggle. Idora Park held on through the 1920s but could not outrun the shift. It closed in 1929 and was demolished. The Depression buried whatever plans might have existed for the site, and by the 1930s the 17-acre tract had been subdivided into small storybook houses and worker housing apartment blocks. The neighborhood became primarily an Italian immigrant enclave that thrived for years. In 1930, a new roller rink called Rollerland opened on Telegraph Avenue in the 5400 block, a modest echo of the skating palace that had once drawn Chaplin. The Oakland Tribune published Idora Park's famous cream waffle recipe in 1972, decades after the park had disappeared, because some things people refuse to let go.