Seton Castle

Seton Castle stands near Longniddry in East Lothian, beside the Firth of Forth. It is an 18th-century Georgian mansion built in the castle style by Robert Adam, his last Scottish project. The house replaced Seton Palace, a grand 17th-century residence once owned by the Earls of Winton. Mary, Queen of Scots stayed there after her second husband’s murder and spent her honeymoon on the site. The palace was burned by the English in 1544 and again damaged during the 1715 Jacobite Rising before falling into ruins. The new mansion was commissioned in 1789 by Lt Col Alexander Mackenzie and completed within two years. Robert Adam designed a castellated house with shaped towers and a curved courtyard wall, using stone from the old palace. The interior features classical details including Corinthian pillars and a cantilevered stone staircase. The property includes the remains of the palace’s formal gardens and is linked to Seton Collegiate Church nearby. It is recognised as one of Adam’s most striking late works. Visitors find a symmetrical late-Georgian house with fortified screen walls and a central archway. The main block connects to wings enclosing an entrance court, while the vaulted ground floor of the old palace remains beneath. The grounds cover 13.5 acres and include working stables and a private tavern. Original features survive inside, and the castellated design gives the house a fortified appearance. The setting overlooks the Forth, close to the ruins of a once magnificent royal retreat.