Seebarn Castle near Harmannsdorf in the Korneuburg district of Lower Austria is a castle with a farm. It is still owned by the descendants of the Counts of Wilczek. The two-wing building was built in the second half of the 17th century and redesigned around 1740 and in the 19th century under Carl Gangolf Kayser. It is surrounded by a partially preserved stone wall.
Seebarn Castle am Wagram is located in the municipality of Grafenwörth in the Tulln district. The original structure dates back to the Middle Ages, but the current building is a Renaissance structure from the mid-16th century, still retaining a medieval core and a defensive tower.
Over the centuries, the castle changed hands several times, belonging to the Schenken von Seebarn family, later to the Zeller and Auersperg families, and finally to the Princes Metternich-Sandor. Today, the castle is privately owned, so visits are generally only possible from the outside. The building is a listed historical monument and is considered a historically valuable site in the Wagram region.