The Mob Museum is great.
https://themobmuseum.org/
The High Roller is cool, especially if you're with a group. Buy tickets ahead of time and skip the lines. Get the drink package.
https://www.caesars.com/linq/things-to-do/attractions/high-roller?utm_campaign=GMB&utm_source=google&utm_medium=local&utm_term=HighRoller&utm_content=attractions&y_source=1_NDM2Njg1NS03MTUtbG9jYXRpb24ud2Vic2l0ZQ==