Palace of the Governors
The Palace of the Governors.
pentagon
The pentagon
It is in New Mexico. The building, called the Hall of Governors, is in the capital city of Santa Fe.
The pentagon.
It is believed to be a fort in Florida that was built by the Spainyards in the 1500s. Now it is just ruins but can be visited in Florida.
There are many thousands of government buildings in the US. The seat of the Federal government is in Washington DC.
Fort Sumter
The US does not and never has had a new government name
I don't know ask some one else
Appalachian Mountains (oldest in US)
The capitol building is the meeting place of the US Congress which is the legislative branch of the US government.