The mega-mansions feature spinning car parks, movable swimming pools and retractable glass walls

DUBAI is splurging on whole ultra-luxury neighbourhoods of bespoke £100million homes built on man-made islands.

The mansions on one of these - dubbed Billionaire Island - almost always come with private beaches and rotating parking tables that automatically turn cars to face the right direction.

Other houses popping up are fitted with cinemas, spas and private elevators.

The new round of super-mansions is being designed to the peak of luxury as developers court the world's wealthy elite.

The palace-like properties can be built to-order and no custom request is off the table - provided the money follows.

Residents can order exclusive art collections, custom furniture and any style of interior design as part of the package.

One of the new mansions boasts a huge, retractable glass dome in its centre covering a pool and a spa.

Another features a swimming pool with a movable floor that rises up to meld with garden tiles during parties.

A builder even transported a giant glass wall thousands of miles to create the perfect sea view.

The client demanded a single pane of glass measuring 17m by 4m that could sink into the ground at the click of a button.