A picture of the Martyrs’ Altar at Tyburn Convent near London, England. The convent was founded in the early 20th century by French Benedictine nuns to commemorate the site of the Tyburn gallows, the favorite site for royal executions between the 14th- and 18th-centuries.

The baldacchino of the altar is a scale model of the triangular gallows (the “Tyburn Tree”) from which hundreds of Catholic martyrs hung during the height of the English Protestant Revolt.