Hailes Castle is a mainly 14th century castle about a mile and a half south-west of East Linton, East Lothian, Scotland. This castle, which has a fine riverside setting, belonged to the Hepburn family during the most important centuries of its existence.Since 1926, it has been the subject of a state-sponsored guardianship agreement, which is now under the auspices of Historic Environment Scotland as a scheduled monument. It is open to the public without charge at all reasonable times.