Balthayock Castle is a medieval tower built in late 14th century. It is said to have been owned by family of Blair since the time of William I (1165-1214). It was very ruinous prior to 1870. James Maclaren saved the tower by building the present battlements, modern roof, caphouse, forestair to the entrance and also altered the interior. It was inhabited until the middle of the last century. It is now unoccupied but is in good condition.
In September 1594 James VI raised a force against the northern earls and met them at the battle of Glenlivet. When he was at Perth, Euphemia Douglas, the wife of the Master of Glamis wrote to Alexander Blair, laird of Balthayock asking him to come with Glamis Castle with his followers, armed and ready to follow the king to the north. In 1599 the young laird of Balthayock and Lawrence Blair with William Row, kirk minister at Kinnoull, were captured at Kinross by the Lord Sanquhar and imprisoned for two weeks.
The walls of castle are almost 10 ft thick and are made of sandstone and whin rubble. On the castle's east side an armorial panel displaying the date 1370 is present on the side of the stone stair. Another armorial with the initials AB (Blair) GM dated 1578 is located at the castle's southeast corner over an archway. Tusking in the building indicates the presence of a barmkin(tower house). The main block of the castle consists of three storeys, an attic and a wing of two storeys; the first floor of the wing is divided into a chamber and hall. It was remodelled in 1870 with the addition of a forestair, crenallated parapet and cap-house. It is now uninhibited but it is in considerably good condition.References:
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.