William and Kate are travelling to Scotland for a two-day tour which will see them visit a range of projects today from Glasgow's Sir Chris Hoy Velodrome where cyclists will be training, to launching a new Scottish project for their foundation.
The initiative is a pilot scheme which aims to inspire and train the next generation of young sports coaches.
The 18th century mansion was bought, along with its contents and adjoining land, by a consortium led by the Prince of Wales in June 2007.
Charles, known as the Duke of Rothesay in Scotland, will join his son and daughter-in-law as the Manoukian Foundation, a new outdoor centre for uniformed youth services and schools, is opened in the grounds.
The couple are known as the Earl and Countess of Strathearn when in Scotland - a title bestowed by the Queen to mark the Duke's marriage - and tomorrow they will travel to Dumfries House in Ayrshire.
The visit will be marked by a fly-past of three Typhoons from 6 Squadron, RAF Leuchars - a base close to St Andrews University in Scotland where William and Kate first met as students.
The royal couple will then travel to Barrow-in-Furness, Cumbria to learn about the new Astute Class of nuclear powered submarines being built for the Royal Navy by BAE Systems.
More top news
The Duke of Cambridge became a fearsome samurai warlord - at least temporarily - when he visited the set of a long-running Japanese drama.
A grandmother says she was outraged after her grandson was segregated from his classmates by a cardboard screen - for being one minute late.
Leaked documents have revealed the first known picture of Mohammed Emwazi - named as IS militant Jihadi John - as a student in London.