Not a bouncy castle: Hadrian’s Wall fort rebuilt in wild colour

Installation on remains of Roman structure in Northumberland is part of wall's 1,900th anniversary celebrations

It is a little-known fact that the Romans invented bouncy castles," a father tells his young, dubious daughter as they spot in the distance what could be a wildly colourful inflatable house in the remains of a fort on Hadrian's Wall.

When the family have made their 15-minute way up from the car park to the fort, they will realise the structure is neither bouncy, nor a castle.