The Palace of Holyroodhouse

 Still a fully working Palace, the Palace of Holyroodhouse is open for viewing, but not photographing, inside at least. The Queen spends several weeks there over the summer and conducts her Garden Party, welcomes dignitaries, installs new knights etc and hols receptions and other state occasions.
The Abbey was founded in 1128, and is now in ruins. The castle grew from the extensions of the monastic buildings, surrounded by gardens,  the kings preferring to live here rather than at the castle.
James 1Vconverting the royal lodgings in the Abbey into a Palace

    Mary, Queen of Scots came to live at Holyroodhouse after her return from France, and her quarters are open for viewing as are the State Apartments, Great Hall, Dining room etc and the all the major rooms of State still used by the Royal Family for official purposes.

There are some amazing tapestries and art works in addition to many of the artifacts relating to the various occupants. Many of the art works by  famous Scottish artists can also be seen n the Queen's Gallery