Tehran's Money Museum is a specialist stop, but a useful one if you are curious about how Iranian history appears in coins and banknotes. The displays connect dynasties, iconography, trade, inflation, and state power through objects most travelers handle every day without thinking about them.
It is not a first-tier Tehran sight, and you should see Golestan Palace, the bazaar, and the major art museums first. But for a rainy afternoon or a deeper dive into everyday history, it adds a different texture to the city: kings, revolutions, scripts, and symbols reduced to the scale of a pocket.