Javan Mard-e Ghassab Tomb (in Persian جوانمرد قصاب lit. "Chivalrous butcher") is in Shahr-e Ray located in south of Tehran. The building dates back Fath-Ali Shah Qajar. Javan Mard-e Ghassab is name of semi-imaginary historic character meaning 'chivalrous butcher' .Inside the tomb gravestone lines show that it's the same old butcher considered legendary class. Javanmard-e-Ghassab Metro Station is placed near tomb.
References
Javan Mard-e Ghassab Tomb Wikipedia(Text) CC BY-SA