#kitezh

Rimsky-Korsakov - Kitezh, aka The Legend of the Invisible City of Kitezh and the Maiden Fevroniya, opera, arranged into a suite by Maximilian Steinberg

Sumpallhue- Home of the Sumpall, Chilean merfolk. Kidnapped or lured humans were said to become sumpall here as well.

Finfolkaheem- an Orkney underwater realm inhabited by finfolk. The winter home of the finfolk and also where captured humans are taken. Said to be magical and extravagant, the origin of the finfolk and their ancestral home.

Hildaland- this was the island home of the Finfolk and their captives/spouses in the summer. Might have been invisible, hidden by magic fog, or barely submerged. Said to be related to the real Eynhallow island.

Naranda- Korean undersea kingdom of mermaids, notably Hwang-ok.

Ryugu-Jo- Is the Japanese palace of Ryujin. While there aren’t necessarily mermaids said to be in residence, there are several mermaid like creatures. And the dragons of asian culture are water dwelling.

Emain Ablach- the Irish island home of the sea god Manannán Mac Lir. Identified with the isle of Man or Arran.

Mag mell- very similar to Emain Ablach, sometimes an underwater kingdom or a paradise island inhabited by gods. Similar to the elysium fields or Valhalla but not always explicitly an afterlife.

Kitezh- A russian submerged city akin to Atlantis that is allegedly still inhabited by some kind of people, either ghosts, water breathing humans, or possibly merfolk but no such desctptions exist.

Thuvaraiyam Pahti- an indian submerged city akin to Atlantis.

Ahtola- a Finnish sea castle.

Caleuche- a Chilean underwater ghost ship similar to thr flying duchman. Helmed by Millalobo or one of his children it acted as a psychopomp of sorts and sometimes just manned by ghosts. It’s not a kingdom perse but it is very cool and fascinating so I decided to include it.

Kitezh, The Russian Atlantis.