This small city of approximately 54,000 residents is perched above the Snake River ... Canyon Mammoth or catching a show at the planetarium. Saving the best for last, Shoshone Falls, the Niagra ...

One of his most audacious attempted stunts came in 1974 when he tried to clear Idaho's Snake River Canyon in a rocket. The feat famously went awry when the parachute opened too early.

Massive thundering waterfalls, deep river canyons ... More on biking the Canyon Rim Trail below. Swim, Hike, or Paddle at ...