Mobile-phone users across the globe will be able to take a virtual walk up the aisle of Westminster Abbey ahead of Prince William and Kate Middleton's wedding.
The Abbey 3D app will give Android, iPhone and iPad users access to the historic royal church using a technique commonly used in film production but rarely applied to mobile devices.
The app begins at the Great West Door, where Middleton will enter on April 29th, before proceeding up the aisle to the High Altar.
Flashing up along the way will be hotspots of information, including the Grave of the Unknown Warrior, and their significance on the day of the wedding.
Archive pictures and potted biographies on key participants at the royal wedding will be on the app as well as archive pictures and historic facts of previous royal weddings.
It will also show a cross-section bird's-eye view of the abbey showing the layout of the church.
(Writing by Avril Ormsby; Editing by Paul Casciato)