Lublin Sanctuary of National RemembranceFor many years the arrangement of the side aisle was marked by numerous commemorative plaques, referring to persons and events in the history of the church, the city of Lublin and our homeland. The post-Bridgettines Church has for years been the centre of national traditions, anniversaries of national uprisings, independence and tragic events of the Second World War. In the post-war period, it was a place full of freedom from the Communist regime, the cradle of Lublin Solidarity. To this day, many patriotic celebrations begin with a Mass in this church. The history of Holy Masses for the intention of our Homeland is long, dating back to the 70's and its former founder, the rector of the Church, pr. Mieczyslaw Brzozowski. One of the commemorative plaques is devoted to his person. Among other plaques we can find those dedicated to Marshal Joseph Piłsudski, a brigadier general Kazimierz Tumidajski, a brigadier general Mieczysław Smorawiński, AK soldiers murdered during the Second World War: in the fire of fights and in the death camps in the east: in Katyń, Miednoje and Kharkiv. There are also epitaphs commemorating the patriotic and social activities of women: Ursuline Sister Bożena Emilia Szerwantke, Helena of Rojowski Masłowicz and Ludwika Zembrzuska.

In 1992, a plaque dedicated to the Rector of our church, then the Servant of God, and today blessed pr. Kazimierz Gostyński, murdered in a gas chamber in Dachau in 1942. Among the plaques commemorating the rectors of this church there are the epitaphs of: pr. Jan Władziński, pr. Andrzej Chlastawy, pr. Stefan Młynarczyk. These and other plaques predestine the side aisle of our church to the name of Lublin Sanctuary of National Remembrance. After renovation according to the recommendations of the conservation services and the instructions of the Liturgical Committee of the Metropolitan Curia in Lublin, the plaques were arranged: some of them remained in the side aisle, some were moved to the church tower, which is available throughout the day for pilgrims and tourists.

The side aisle has recovered its hidden glow with new pargets, made in accordance with the gothic technique (sand-lime parget, rippling, uneven) flooring, lighting. On the side altar, a fragment of the old stone floor was uncovered. On the western wall of the aisle, a white stone wall was restored, and near the side entrance, fragments of the original 15th-century parget and brickwork were exposed. Under the floor of the nave there are 5 crypts. At the entrance of one of them there was installed a glazing to allow visiting its exposure. The image from the crypt is also transmitted to the church tower. Renovation of the side altar of St. Joseph was not covered by the Project, co-financed from the EU funds.

In the described aisle, in its central niche, there is, sometimes unnoticed by the visitors, a chapel of St. Barbara with neo-baroque statue of Pieta (at the turn of the 19th and 20th centuries). The chapel's name commemorates the existence in the past centuries the chapel of the Blessed Virgin Mary, St. Sophie and St. Barbara, where the present church was built.

At present, this chapel functions as Katyń chapel, where a plaque commemorating the victims of the pogrom, an urn with the ashes of murdered in Katyń, the buttons taken from the pits of death and an image of the God's Mother of Katyń. In October 2012 the urn with ashes of the murdered in Bykownia, the gift of the Governor of Lublin, was also placed there.

In the two remaining wider niches, over which a narrow corridor runs, connecting the monastery with the choir (now the passage is walled), there are historic 17th-century confessionals. One of them was renovated in March 2009. Thanks to the 18th-century wall extension on the south side, the aisle has an additional side entrance with a vestibule. On the side of the entrance there is a platform for disabled, and the side entrance to the temple will also function on Sundays and holidays.