The Triangular Lodge near Rushton, in Northamptonshire, England, is an unusual building. This three-sided house was built in the late 16th century by Sir Thomas Tresham, a devout Catholic, as a way of expressing his faith. The number three, symbolizing the Holy Trinity, is apparent everywhere, from the triangular shape to the use of the trefoil window designs, to the number of floors, the various dimensions and symbolic letters, dates, and numbers which are all multiples of three.

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