On a budget, weigh it — Petersen Automotive Museum isn't cheap for what it is.
~$21 (Vault tour extra)
A standout even for non-gearheads — rare hypercars, Hollywood movie vehicles, and design history in a building wrapped in swooping steel ribbons. It's ticketed and the must-see underground Vault costs extra, so the value depends a lot on how much cars and design speak to you.