Rosslyn Chapel

Rosslyn Chapel (Collegiate Church of Saint Matthew) was founded in 1446 by Sir William Sinclair, Earl of Orkney. Its interior is covered in 213 carved stone cubes bearing geometric patterns that two Scottish musicians, Thomas and Stuart Mitchell, identified in 2007 as musical notation using cymatics — the geometry of vibration. The resulting composition, transcribed for woodwind, strings, and organ, is known as the 'Rosslyn Motet'.

The chapel was thrust into wider consciousness by Dan Brown's The Da Vinci Code (2003), which proposed it as the final resting place of the Holy Grail and a repository of Templar secrets. Ground-penetrating radar surveys have confirmed vaulted chambers beneath the floor that have not yet been opened. The carved pillars include the Apprentice Pillar — a column of intricate spiral stonework whose creator, legend holds, was murdered by the master mason in a fit of jealousy upon seeing it.