Kanye West is planning to buy Kim Kardashian a castle.

The 'Bound 2' rapper believes he has come up with the perfect wedding gift for his fiancee - with who he has seven-month-old daughter North - and has asked his staff to scour Europe for the perfect property.

A source told National Enquirer magazine: ''Kanye's insisting he wants to give Kim and actual castle as a wedding present. He's already got his people searching all over Europe for the perfect storybook property. Kanye keeps telling friends, 'Nothing is too good for Kim! My wife deserves to be treated like royalty, and that's just what I'm going to do.''

Before the castle, Kanye may please his wife-to-be a little more if he employed a few extra workers to complete work on their $11 million Mediterranean-style five-bedroom mansion in Bel Air, Los Angeles.

The property is not set to be ready for them to move into until summer, over a year after renovation work was started.

The mansion has reportedly been furnished with six special-edition beds costing $185,000 in addition to $800,000 worth of gold-plated toilets.

A source said recently: ''They expect the interior to cost twice as much as the property. They're spending more than a million on a security system alone.''