The mausoleum of Nader Shah, founder of the Afsharid dynasty and one of the most ferocious military leaders in Persian history, stands in a small public garden a kilometre north of the Imam Reza Shrine. The 1959 monument is a deliberately martial building — a sweeping, sword-like canopy in dark stone over a sarcophagus, with a bronze equestrian statue of Nader in front and bas-reliefs of his battles around the base.
A small museum next to the tomb holds personal effects, weapons, and chain mail attributed to Nader. It's a useful counterweight to the shrine: secular, militaristic, and historically anchored in the same city.