The resort celebrated its 30th anniversary on Thursday. The week-one spectacle set the tone for what Treasure Island would be for years to come. 27 a grand opening ceremony tied the new resort to future development on the Strip when cannons from the pirate ships went off at the same time as the demolition of the Dunes hotel, the spot that would later become the Bellagio. He welcomed gamblers to his property on Oct. Mirage Resorts developer Steve Wynn wanted to capture the imaginative spirit of Las Vegas through his newest resort, a pirate theme inspired by the novel by Robert Louis Stevenson. (Bizuayehu Tesfaye/Las Vegas Review-Journal years ago, Treasure Island welcomed guests with a bang. Guests leave Treasure Island, on Wednesday, Oct.