Question: Where does the ruined castle lies which is near by the Montgreenan?

Context paragraphs:
Finavon Castle: Finavon Castle lies on the River South Esk, about a quarter of a mile south of Milton of Finavon village and five miles to the north-east of Forfar in Angus, Scotland.  The name is applied both to a ruined 17th-century castle, as well as the 19th-century mansion house 130m to the west.

Bognie Castle: Bognie Castle (also called Conzie Castle) is a ruined castle near Huntly, in the Aberdeenshire region of Scotland.  It was built in the 17th century and is now ruined.  It once rose 4 storeys high.

San Esteban de Deyo: San Esteban de Deyo, also called the Castillo de Monjardín, is a ruined castle on a hill overlooking Villamayor de Monjardín in Navarre.  The castle lies at an elevation of 890 metres.  The castle has a Roman foundation, but was repeatedly rebuilt over the centuries.  It was one of the last fortresses of the Banu Qasi, the local Muslim dynasty, before it was taken by King Sancho I of Navarre in 914.  According to the "Historia Caroli Magni et Rotholandi"—a legendary retelling of the lives of Charlemagne and Roland found in the 12th-century Codex Calixtinus—the castle was actually taken by Charlemagne from a Navarrese prince named Furré.  Only the walls of the castle stand today.  Many of the stones were taken to build a Baroque hermitage, the Ermita de San Esteban, in the 17th century.

Montgreenan: Montgreenan is an estate in North Ayrshire, Parish of Kilwinning, Scotland.  The Lugton Water runs through the policies and farmland of Montgreenan.  Nearby are the hamlets of Torranyard and Auchentiber.

Wegelnburg: The Wegelnburg is a ruined castle near Schönau in the Palatinate Forest in Rhineland-Palatinate, Germany, near the border with France.  Its location is at a height of 572m, making it the highest ruined castle in the Palatinate Forest.

Auchenharvie Castle: Auchenharvie Castle is a ruined castle near Torranyard on the A 736 Glasgow to Irvine road.  Burnhouse lies to the north and Irvine to the south.  It lies in North Ayrshire, Scotland.

Carra Castle, Antrim: Carra Castle or Castle Carra (Irish: "Caisleán Carrach" ) is a ruined castle, just north of Cushendun, County Antrim, Northern Ireland.  It dates to around the early 14th century.  The castle lies in a field near the coast and the harbour of Cushendun, known as Murlough Bay.  The site had once been used during medieval times as a children's cemetery.

Altes Schloss (Bad Berneck): The Altes Schloss ("Old Castle") near Bad Berneck in south Germany is a ruined castle built in the Gothic style as an "Amtsburg" towards the end of the High Middle Ages.  The castle lies on the "Schlossberg" ("castle hill") of Bad Berneck in the Upper Franconian district of Bayreuth in Bavaria.  Today the lofty keep is the emblem of this small spa town.

Crichton Castle: Crichton Castle is a ruined castle situated at the head of the River Tyne, near the village of Crichton, Midlothian, Scotland.  The castle lies two miles south of the village of Pathhead, and the same distance east of Gorebridge, at .  A mile to the south-west is Borthwick Castle.

Clun Castle: Clun Castle is a ruined castle in the small town of Clun, Shropshire.  Clun Castle was established by the Norman lord Robert de Say after the Norman invasion of England and went on to become an important Marcher lord castle in the 12th century, with an extensive castle-guard system.  Owned for many years by the Fitzalan family, Clun played a key part in protecting the region from Welsh attack until it was gradually abandoned as a property in favour of the more luxurious Arundel Castle.  The Fitzalans converted Clun Castle into a hunting lodge in the 14th century, complete with pleasure gardens, but by the 16th century the castle was largely ruined.  Slighted in 1646 after the English Civil War Clun remained in poor condition until renovation work in the 1890s.

Supporting paragraphs: Montgreenan Auchenharvie Castle
Answer: North Ayrshire, Scotland