With his commission to expand the crypt donated by Anna (N°1) and Matthias (N°2), Emperor Ferdinand III. (N°27) laid the foundation stone for the Habsburg family burial place at the Capuchin monastery.
After his successor Leopold I. (N°37) came to power, work began in 1657 on the expansion of the Leopold Crypt, which is located directly beneath the nave of the church. The sacristan of the Imperial Chapel reported in a submission dated April 24, 1700, “that the Imperial Crypt must be enlarged so that the two coffins of Maria Eleonora, who died in 1697, and Maria Anna, who died in 1691, can be buried there” - „daß die Kayl. Krufft auf dass die zwey Sarch Maria Eleonorens gest. 1697 und Maria Annas gest. 1691 könen beygesetzt werden, zu erweidern höchstens vonöthen.“
In 1701, the complex was expanded once again to the west, extending into what is now the Karlsgruft. On April 11, 1701, the court chamber instructed the payment office to make the “6,500 florins allocated for the expansion of the imperial crypts and the manufacture of two coffins available to the building office” - „zu Erweutherung der kayl. Grufften und zu verfertigung Zweyer Sarchen angewiesenen 6.500 fl. an das Bau-Amt flüßig zu machen.“
A barrel-vaulted passageway leads from the Angel Vault to the Leopold Vault. The high Baroque room extends from west to east under the main nave of the church. Four massive pillars with square bases divide it into three naves, creating a hall-like effect. On the walls and corners, the cross vault rests on pilasters with richly profiled bases and imposts. The vault is broken up by circular stucco decorations. The Leopold Crypt tapers towards the west and leads through a barrel vault to the flat-vaulted Charles Crypt.
In the middle of the east wall is a heart urn epitaph for the heart of the Queen of Portugal, Maria Anna (N°9), who died in 1754, the daughter of Leopold I. The work is by Balthazar Ferdinand Moll.
In addition to the children's coffins and the heart urn epitaph, the Leopold Crypt houses a heart urn of Empress Claudia Felicitas (N°24) and 16 other sarcophagi.
Initially, the principle was to place the coffins of female persons on the north side (epistle side) and those of men on the south side (gospel side). The first floor plan by Herrgott Gerbert still shows this arrangement, which was overturned by the placement of the coffin of Josephs I. (N°35) on the north side and that of Empress Eleonora Magdalena (N°32) on the south side next to her husband Leopold I.
In older photos of the Leopold Crypt, the holes for the former grille are still visible in the stone floor.
Builder/Donor: Emperor Ferdinand III.
Architectural style: High Baroque
Sarcophagi:
![]()
in the Leopold Vault