The bathhouse is a one-story stuccoed building with stained-glass windows and clay roof tiles. Ten-foot-tall walls enclose a large courtyard outside the southeast corner of the building. The closed wooden doors to the courtyard are engraved with images of smiling nymphs dancing and frolicking in water. This L-shaped courtyard features a trimmed lawn and nicely manicured shrubbery. The yard is decorated with white marble benches and stone fountains, each in the form of a smiling nymph tipping a jug that spills water into a circular stone basin.
The walls of this twenty-foot-high pillared chamber are adorned with frescoes of bathing royalty. Natural light streams through stained-glass windows, creating colorful patterns on the tiles of polished blue marble that cover the floor. Three shallow, sunken pools contain scintillating perfume-scented water. White marble benches bearing stacks of dry towels are situated near the pools, each of which comes equipped with a pair of brass faucets.
Duke Vanthampur became aware of this ancient dungeon while she was managing the city’s water utilities and sewer system. She built the bathhouse to hide it.
Bhaal's Alter
Three wooden beams brace the ceiling of this flooded chamber, which features a stone altar covered with entrails in the northeast corner. Hanging on the wall above the altar is a three-foot-tall steel mask cast in the form of a frowning human skull.
The back wall of this dry alcove is hung with a 5-foot-wide, 7-foot-tall tapestry. It depicts a grisly scene of four faceless figures ripping apart a fifth figure, who is screaming.
This chamber is empty but not bereft of decor. Carved into each of its three doors is a full-figure depiction of one of the Dead Three. A character recognizes all the figures with a successful DC 10 Intelligence (Religion) check.
East Door. The face of this door bears a carving of Bane, the lawful evil god of tyranny, who is depicted as a tall, armored man wearing a bucket helm. His right gauntlet is painted black and clutches a set of shackles.
North Door. This door bears a carving of Bhaal, the chaotic evil god of murder. He’s depicted as a powerfully built, skull-headed man with long, curved blades where his hands should be.
South Door. This door bears a carving of Myrkul, the neutral evil Lord of Bones. He is portrayed as a cloaked figure whose face is hidden under a cowl. In his skeletal hands, he clutches a screaming human skull.
Bane's Alter
The eastern part of this room is unlit, flooded, and braced with floor-to-ceiling wooden beams. Rough-hewn steps rise out of the murky water to the western portion of the room, which is dry and lit by two torches in sconces that flank a stone altar. Shackled to the wall behind the altar is a sickly man in a loincloth with a burlap sack over his head. An alcove in the north wall contains a freestanding suit of plate armor missing its helm.
Standing before the altar are two grim figures: a powerfully built woman clutching a mace, and an even bigger man wearing a bucket helm. The helmed man is jabbing the prisoner with a spear, causing him to twitch. Both figures are clad in chain mail, and the woman carries a wooden shield with a leering skull painted on it.