The two tower staircases on the building in front of you, in addition to the wall that connects them, date back to the second half of the 15th century. These are the remains of a private mansion owned by the Cousdun family, whose coat of arms are affixed on the ornate door lintel.
From 1582, part of the building was dedicated to Protestantism, but this church was destroyed in 1646.
By 1843, the private mansion had fallen into disrepair and it was bought by the département to house a court. The new building was constructed in a neo-Gothic style so that it would blend with the existing towers. The full structure was completed 20 years later with the lowest section in front of you.
The court closed in 2009. You can still visit it to see the vaulted-ceiling concourse on the ground floor, while the courtroom on the upper floor is still as it was.