Question: Where is the there a small medevial castle

Context paragraphs:
Kisimul Castle: Kisimul Castle (Scottish Gaelic: "Caisteal Chiosmuil" ) and also known as Kiessimul Castle, is a small medieval castle located on a small island off Castlebay, Barra, in the Outer Hebrides, Scotland.  It gets its name from the Gaelic "cìosamul" meaning "castle island".

Wolgast Castle: Wolgast Castle was a Castle in the city of Wolgast in the northeast of today's Mecklenburg-Vorpommern.  It was located on a small barrier island in the Peenestrom, the strait which separates Usedom island from the mainland.  The island is still called "Castle Island".  The castle was one of the most important Renaissance buildings in Northern Germany.  It existed from 1496, when it replaced an earlier castle on the island, until it was demolished in the 1820s.  After it was demolished, the materials were used to constrcut other building, so no ruins exist.  Only a few items from the castle have been preserved in various exhibitions.  A reminder of the castle is the coat of arms of the city of Wolgast, which shows a castle tower between two griffins.

Clare Castle: Clare Castle is a medieval castle in the small town of Clare in Suffolk, England.  Built shortly after the Norman conquest of England by Richard Fitz Gilbert, the motte and bailey castle was later improved in stone.  In the 14th century the castle was the home of Elizabeth de Clare, one of the richest women in England, who maintained a substantial household there.  The castle passed into the hands of the Crown, and by the 16th century was in ruins.  Damaged by the construction of the Great Eastern Railway through the castle in 1867, the remains of the castle are now part of a local park and a scheduled monument and a grade 2* listed building.

Castle Acre Castle and town walls: Castle Acre Castle and town walls are a set of ruined medieval defences built in the village of Castle Acre, Norfolk.  The castle was built soon after the Norman Conquest by William de Warenne, the Earl of Surrey, at the intersection of the River Nar and the Peddars Way.  William constructed a motte-and-bailey castle during the 1070s, protected by large earthwork ramparts, with a large country house in the centre of the motte.  Soon after, a small community of Cluniac monks were given the castle's chapel in the outer bailey; under William, the second earl, the order was given land and estates to establish Castle Acre Priory alongside the castle.  A deer park was created nearby for hunting.

Dunderave Castle: Dunderave Castle is an L-plan castle built in the 16th century as the Scottish seat of the MacNaughton clan.  The castle lies on a small promontory on the northern shores of Loch Fyne, around 5 km north-east of Inveraray, Argyll.  The castle is in use as a residence.  The present castle was built after their previous castle was destroyed following a Plague infection.  The old castle, and remnants of McNaughton crannógs, can still be seen on the lochan known as the Dubh Loch at the head of Glen Shira.

Hayashi Castle: Hayashi castle was a 15th-century castle, (alternatively known as Hayashi-jo, Fukuyama-jo) in Satoyamabe village, Matsumoto city, Nagano, Japan.  A mountain-type castle, it is now largely in ruins.  The site is sometimes regarded as one castle, or two castles, Hayashikojo (the small castle) and Hayashiohjo (the larger castle).

Castlebay: Castlebay (Scottish Gaelic: "Bàgh a' Chaisteil" ) is the main village and a community council area on the island of Barra in the Outer Hebrides, Scotland.  The village is located on the south coast of the island, and overlooks a bay in the Atlantic Ocean dominated by Kisimul Castle, as well as nearby islands such as Vatersay.  Castlebay is also within the parish of Barra.  The village is located on the A888, which serves as a circular road around Barra.

Trifels Castle: Trifels Castle (German: "Reichsburg Trifels" ) is a reconstructed medieval castle at an elevation of 500 m near the small town of Annweiler, in the Palatinate region of southwestern Germany.  It is located high above the Queich valley within the Palatinate Forest on one peak of a red sandstone mountain split into three.  Trifels Castle is on the peak of the "Sonnenberg", and on both of the other two rock elevations there are castle ruins: Anebos Castle and Scharfenberg Castle (demotically called Münz).

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.

Otočec Castle: Otočec Castle is a castle hotel on a small island in the middle of the Krka River in Otočec, Slovenia.  It is the only water castle in Slovenia.  The castle was first mentioned in documents in the 13th century, although the walls are said to date to the more precise date of 1252.  It was once owned by Ivan Lenković, the chief commander of the Croatia-Slavonia march.  The writer Ivan Tavčar set two of his novels at the castle, "Otok and Struga" and "Janez Sonce".  The islet is linked to both banks of the river by bridges and the castle has now been converted into a small hotel.  Bradt Travel Guides calls it "one of the most famous hotels in Slovenia."

Supporting paragraphs: Castlebay Kisimul Castle
Answer: Scotland