Vote for the best outdoor water park once per day until polls close on April 24 at noon ET. The 10 winners will be announced on May 1. Have questions? Read the official Readers' Choice rules.

To decide the best of the best, U.S. News considered scenic beauty, accessibility, expert opinions and traveler sentiment to determine the best national parks in Canada. Have a favorite?

where he will soon break ground on an indoor water park that promises to be one of the largest in Canada. The project, called Morea, which was given the green light in March by the suburb of ...