The estate was first mentioned in 1466. It has been associated with the Gilsens, von Rosens, von Zoeges, von Benckendorffs, von Krusensterns and von Uexküll-Güldenbandts. The ruins of a vassal castle destroyed during the Livonian War were reconstructed as a stately castle in the 17th to 18th centuries, which received its present form in 1790.
For many years, the manor was the home of a world famous explorer and mariner Adam Johann von Krusentern, who also passed away in Kiltsi. Since the 1920s, the manor houses a school. The building has been thoroughly restored starting in 2000.
the mansion can be rented for celebrating birthdays and weddings, organizing trainings and seminars, and in summer you have the opportunity to visit the mansion.
Easter Aquhorthies stone circle, located near Inverurie, is one of the best-preserved examples of a recumbent stone circle, and one of the few that still have their full complement of stones. It consists of a ring of nine stones, eight of which are grey granite and one red jasper. Two more grey granite stones flank a recumbent of red granite flecked with crystals and lines of quartz. The circle is particularly notable for its builders' use of polychromy in the stones, with the reddish ones situated on the SSW side and the grey ones opposite.
The placename Aquhorthies derives from a Scottish Gaelic word meaning 'field of prayer', and may indicate a 'long continuity of sanctity' between the Stone or Bronze Age circle builders and their much later Gaelic successors millennia later. The circle's surroundings were landscaped in the late 19th century, and it sits within a small fenced and walled enclosure. A stone dyke, known as a roundel, was built around the circle some time between 1847 and 1866–7.