According to me,this honour should go to the Kangra Fort in Kangra Valley H.P. which is more than 2 thousand years old ,one should visit this fort which only has ruins now but gives the pleasure of being a part of so lavish country.
Fort Nassau, Fort Charlorre, Fort Fincastle & Fort Montigue.
Fort Sumter
Aryavarta is the oldest name of India.
Kutch dargah is India's oldest
A building called the "old fort" is the oldest building in the state of Montana. The "old fort" is located in Fort Benton and it is considered a national landmark.
Aravalli is the oldest mountain in India.
The oldest stone fort in the United States in the Castillo de San Marcos in St Augustine Florida.
Khurnak Fort is not in India. It is located in China.
khurda fort , now which is at garh khurda is the last freedom fort of india
The oldest stone fort in the United States in the Castillo de San Marcos in St Augustine Florida.
Fort Leavenworth is the oldest military installation west of the Mississippi River.
Gwaliar fort