If you're interested in any "Davinci Code" bullshit you could visit Rosslyn Chapel. See if you can talk them into letting you dig into the crypt for the Holy Grail.

Official website
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It was a wonderful community with some very enjoyable members. But the vast majority were like German housewives circa 1943 prenteding that horrib;le smell wafting through their open windowsd was just the neighbors having a cookout..--Windsock