The building, which blocks up a part of the chapel of Our Lady, was another excrescence of the reign of Louis XIV., and the work of Moreaux; it is used as a treasury and vestry. Above the chapel of the Virgin is a belfry erected in the 17th century, surmounted by a cross and the ship of the city of Paris. The bell weighs 2,500 kilogrammes. It was preserved by the Revolutionists in consequence of its usefulness; but a shell from Montmartre on the 25th of May, 1871 (during the Commune), set fire to the steeple. The blaze was soon extinguished, but not before it had done a considerable amount of harm. The north door is of later date, 1640. It has two turrets, in one of which is a staircase leading up to the presbytery. S. Eustache, costumed as a Roman warrior, guards the doorway upon the central pillar; while S. Denis bearing a palm, and S. Geneviève with a lamb at her feet, keep watch upon each side. The socles are ornamented with the Cardinal Virtues of Prudence, Courage, Justice, and Temperance, which were discovered some years ago, hidden behind a shop for the sale of religious books and images which obstructed the entrance to the passage. The capital of one of the pilasters upon this side of the church is well worth attentive study. In the midst of some foliage is a child bearing a basket of fruit, and on each side are two young and beautiful Genii forming a sort of buttress to the abacus. On entering the church the effect is most impressive, and upon any great festival, or during the evening services of the Adoration Perpétuelle, when the whole east end is ablaze with candles, few churches can compare with it in grandeur. Nowhere else is to be found such a curious combination of styles, with a more harmonious result. The architect's ambition must have been to prove that two styles so opposed to each other in every respect were capable of being united with the best effect. The Renaissance of S. Eustache seems to give new life to the dying Gothic, by marrying its pilasters, its columns, and its Greek pediments to the pointed groining and arches.