Holyrood ("Holy Cross") Abbey in Scotland. Reportedly, Robert the Bruce held parliament here. Multiple invading armies damaged the Abbey, which was finally plundered during the Scottish Reformation in Holyrood Abbey - Edinburgh, Scotland.
The cloisters at the Cathedral Church of St Peter and the Holy and Indivisible Trinity, in Gloucester, England. It originated in 678 or 679 with the foundation of an abbey dedicated to Saint Peter (dissolved by King Henry VIII).
The chapel of Templars - Rosslyn (Edinburgh) - Scotland. Roslyn Chapel was one of my favorite places. Founded in the century by William Sinclair who was descended from a noble family of Norman knights. It is said to have many Knights Templar symbols.