There are a number of castles in the play: Forres, Inverness, Fife and Dunsinane. Inverness is actually Macbeth's castle.
dunsinane castle
In Act 1 they are living in Inverness, possibly in a castle or possibly in a large house. By Act 5 they are living at Dunsinane, which is a castle.
In Act 5 Scene 6, a Messenger arrived at Dunsinane, the royal castle of Macbeth [c. 1014-August 15, 1057]. He brought the news that Birnam Wood appeared to be moving towards Dunsinane. He said that the forest appeared already to have moved within three miles of the royal castle.
There are two different castles. The castle at Inverness was MacBeth's home before he became king. After becoming king, he had access to a number of different castles, including Dunsinane, which is in the south on the Firth of Forth.
An army consisting of a lot of English troops, and some disaffected Scotsmen, including Macduff and Malcolm.
Malcolm's army cut branches of the trees in Birnam Wood to use as camouflage to prevent observers from knowing the exact strength of the force. They carried these branches all the way to Dunsinane, which made it look like Birnam Wood was actually coming to Dunsinane.
Malcolm instructs his men to cut down branches from Birnam Wood to use as camouflage when approaching Macbeth's castle at Dunsinane. This fulfills the witches' prophecy that Macbeth would not be defeated until Birnam Wood comes to Dunsinane.
Macbeth [c. 1014-August 15, 1057] began his royal life and royal rule with his crowning at the traditional coronation site of Scone. He then proceeded to live and rule from royal residences once he became King of Scotland. One royal residence was the palace at Forres, of Act 3. Another royal residence was the castle at Dunsinane, of Act 5.
In the play "Macbeth" by William Shakespeare, Birnam Wood comes to Dunsinane when Malcolm's army cuts down branches to use as camouflage while advancing on Macbeth's castle. This fulfills the witches' prophecy to Macbeth that he will not be defeated until Birnam Wood comes to Dunsinane.
Dunsinane Curling Club was created in 1886.
Oh, dude, you're really asking the hard-hitting questions today! So, like, technically speaking, the word "castle" does have a short "a" sound, but, like, who really cares, right? I mean, it's not like the pronunciation of "castle" is gonna keep you up at night.