The Roman town was discovered some 2,000 years ago on the HS2 High Speed Railway.
The invention includes ancient artifacts such as pottery, jewelry and more than 300 coins.
It is said to be of great importance during the railroad project, which has been excavated by an 80 archaeologists for over a year at an undisclosed location in South Northamptonshire.
The 32-foot-wide Roman road passes through the Iron Age village, indicating that it is busy with carts for trade because of its proximity to the Cherwell River.
Coins also indicate “significant” commerce.
Glass containers, ornamental pots, jewelry and make-up evidence were found on the site – known as the Blackgrounds after its black clay.
James West, site manager of the Museum of London Archeology Headland Infrastructure, said: “The revelation of such a well-preserved and large Roman road is extraordinary and tells us so many great quality discoveries and people who have lived here.”
The town is one of more than 100 archaeological sites to be found on the route from 2018.
It will appear tonight at 8pm on the BBC Two documentary Digging for Britain.