Gate of National Garden belongs to Qajar Era and it is located on Imam Khomeini Street, Tehran. This building is the entrance gate to Mashgh Square. Mashgh Square has been a military area at the disposal of troops. Gate of National Garden has been constructed as a combination of Iranian and European architectural style. Gate of National Garden has a roadway gate and on its both sides there are two passages for pedestrians. On the upper section of this structure, a watching space, kettle drumming, and passage of military forces have been designed and constructed. Gate of National Garden has been registered as one of national monuments of Iran.