Madame Tussauds Las Vegas. Feel what it's like to be a modern day star when Madame Tussauds Las Vegas puts you in the spotlight with your favorite celebrities! This unique interactive museum lets you in on the action - try your hand on the American Idol stage - will Simon like your performance? Try it all and more at Madame Tussauds Las Vegas. Book and Save: 9% Madame Tussauds Las Vegas.