Château du Seuil bears witness to the fascinating architectural evolution in the Aix en-Provence region. From a simple seigneurial farm before the 15th century, in the mid-17th century it became a summer residence for the Michaelis family, a family of rich merchants who were counsellors to the king of Provence, members of the parliament of Provence. The family also held administrative and military offices and were made nobles by Louis XIV.
The main building was completed around that period, joining the two wings with a classical façade boasting the symbols of power: superbly ornate door with pediment boasting the family coat of arms, majestic courtyard decorated with two lions and earth globes.