Underground Chapel (Anime)

The Underground Chapel is located beneath a chapel in a village near the Reiss family estate. It is a sacred location and the walls are composed of a luminescent ore that is thought to have been created by some form of Titan power. It is here that the royal family's power is passed down from vessel to vessel, for generations.

Description
Above ground, it looks and functions like any other church. Below the altar, hidden by a rug, is a stairway that leads to a large underground cavern. The cavern was created by the First Reiss King, and contains hardened crystal walls that produce their own natural illumination.

History
Uri Reiss inherited the Founding Titan from his father in the ritual beneath the chapel, and would later pass on the Titan to his niece, Frieda Reiss, in the same place.

The Fall of Shiganshina arc
On the day of the fall of Wall Maria, Grisha Jaeger confronts the Reiss family while they are praying in the Chapel. Grisha intends to steal Frieda Reiss' Founding Titan power and transforms into his Titan form. Frieda then transforms as well and battles Grisha, but she is not skilled enough to fully utilize her Titan's powers and is killed by Grisha and eaten. The rest of the Reiss family, with the exception of Rod Reiss, are slaughtered by Grisha as well.

The Uprising arc
After having a vision of Frieda Reiss, Eren Jaeger wakes to discover himself gagged and restrained on a platform overlooking a large crystal cavern. He spots Historia approaching below him while wearing a pure white dress.

Navigation
Unterirdische Kapelle (Anime)