Lotus Isle, Amusement park in Portland, Oregon

Lotus Isle was a 128-acre amusement park on Tomahawk Island in Portland, Oregon, operating from 1930 to 1932. It held forty attractions, including the Whiz wooden roller coaster, Bulldog bumper cars, an Alpine Scenic Railway, and the Peacock Ballroom, a dance hall that cost about $60,000 to build.

Lotus Isle opened on June 28, 1930, built by investors who had seen the success of nearby Jantzen Beach; it cost between $500,000 and $600,000. After an 11-year-old drowned on August 28, 1930, owner Edwin F. Platt shot himself in the park office the next day. The Peacock Ballroom burned down on August 24, 1931, and the park went bankrupt after the 1932 season.

The park's name and layout drew on an oriental theme, and its entrance carried a 100-foot neon Eiffel Tower sign. The Peacock Ballroom, built for about $60,000, held room for 6,600 dancers, and manager Al Painter staged a "Dance-A-Thon" there in the 1931 season.

The park no longer exists: it went bankrupt after the 1932 season and its property was liquidated, so there is nothing left to visit on Tomahawk Island. The site lay just east of Jantzen Beach Amusement Park, across from the Columbia River. Its 1914 Herschell-Spillman menagerie merry-go-round survives in San Francisco's Golden Gate Park.

John Ringling sold Lotus Isle a temperamental bull elephant named Tusko, which had earlier rampaged through Sedro-Woolley, Washington. Spooked by a low-flying stunt plane, the animal destroyed several pavilions before ending up at Seattle's Woodland Park Zoo.