Aerial photography has revealed that Harlaxton was the site of a unique neolithic long barrow enclosure that formed a cursus, believed to have been made of multiple rows of standing wooden columns.

Dilwyn Jones has speculated that the form of the complex indicates that Harlaxton was an important inter-regional link during the neolithic period.

Many villagers had already found employment elsewhere by the time of the First World War, when transport improvements made this an option.

][citation needed] During the First World War a Royal Flying Corps aerodrome was constructed at the rear of the manor house.

[7] Following the Second World War the village grew in size and population with small developments either side of the main Grantham to Melton Mowbray road.

[8] In July 2010 the villagers joined supporters of the Grantham Canal Society in the reopening of the newly restored Harlaxton Wharf.

[9] The Grantham Canal Partnership has applied for Lottery Funding to restore two derelict locks as part of an Inland Waterway's Association skill training scheme.

Originally wattle and daub, they were refinished by De Ligne in red brick as are many of the buildings in the village, with added embellishments of stonework.

There are unusual architectural features in the older buildings including distinctive chimneys, rounded pillars and overstated porches and verandas.