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In page Thomas Becket:

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The monks were afraid Becket's body might be stolen, and so his remains were placed beneath the floor of the eastern crypt of the cathedral.[4] A stone cover over it had two holes where pilgrims could insert their heads and kiss the tomb,[1] as illustrated in the "Miracle Windows" of the Trinity Chapel. A guard chamber (now the Wax Chamber) had a clear view of the grave. In 1220, Becket's bones were moved to a new gold-plated, bejewelled shrine behind the high altar in the Trinity Chapel.[5] The golden casket was placed on a pink marble base with prayer niches raised on three steps.[6] Canterbury's religious history had always brought many pilgrims, and after Becket's death the numbers rapidly rose.[citation needed]