Duncan's grooms, who he and Lady Macbeth have framed for the murder of Duncan. He claims to have been infuriated at their apparent guilt, when in fact he just wanted to shut them up.
When Duncan arrives at Inverness, Macbeth's castle, his mood is trusting and unsuspecting. He sees the castle as a place of hospitality and safety, not foreseeing the betrayal that awaits him.
He's inside the castle. Duncan reaches the castle in Act I Scene VI, and Macbeth arrives in the previous scene. Duncan remarks that Macbeth passed them on the way, so he knows he's around somewhere. He asks Lady Macbeth to "Conduct me to mine host" and they enter the castle.
He was in King Duncan's old castle the Macbeth rightfully claim after killing King Duncan, and his sons Malcolm and Donalbain flee the scene and go to England and Israel.
Inverness, when he arrives at Macbeth's castle in 1,6. He says, "This castle hath a pleasant seat. The air nimbly and sweetly recommends itself to our senses."
Macbeth kills Duncan in his own castle at night time.
King Duncan was killed by Macbeth in the latter's castle at Inverness.The king was asleep in his chamber which had two guards outside whom Lady Macbeth had given intoxicated drinks.Note : Due to Macbeth's prior decision of not killing Duncan, Lady Macbeth had decided to take up the 'business' . However, when she saw her father's face in Duncan's, she decided against killing the king herself.********
Duncan invites himself to Macbeth's castle in Inverness, which is located in Scotland. This is where the majority of the play Macbeth takes place.
The night of Duncan's murder he is spending the night at MacBeth and Lady MacBeth's castle.
Duncan admires MacBeth's castle when he arrives. He enjoys its "pleasant seat" and its nimble sweet recommendation by the air. Banquo proceeds to describe the castle and the delicate air. Lady MacBeth then arrives and assures Duncan she will do whatever he wants in order to make him comfortable. This happens while the reader or watcher of the play knows that MacBeth is planning on killing Duncan.
King Duncan gifted Lady Macbeth with a diamond ring as a token of appreciation for hosting him at their castle.
Macbeth's coronation
Macbeth brings back King Duncan's bloody daggers to the castle after he murders him.