Castle Caladan
ancestral seat of House Atreides
Castle Caladan was the official residence of the ruling clan of the planet Caladan and the home of House Atreides for twenty-six generations, until Duke Leto Atreides I was ordered to take up the fief of Arrakis in 10191 AG.
Castle Caladan was the official residence of the ruling clan of the planet Caladan, the ancestral seat of House Atreides. It was an ancient structure of very old stone and wood, characterised by many rooms and halls and by vaulted ceilings with patterned wooden beams. The castle stood beside a great river and the farmland owned by the House, and various of its rooms looked out over river orchards and Mount Syubi. (Dune)
Structure#
The castle was built of very old stone and wood and held many rooms and halls beneath vaulted ceilings supported by patterned wooden beams. It stood by a great river amid the farmland of House Atreides, and several of its chambers offered views of the river orchards and of Mount Syubi. Its dining hall was the scene of many lush meals presided over by the Atreides Duke. (Dune)
Seat of House Atreides#
Castle Caladan was the home of House Atreides for twenty-six generations. That tenure ended when the House, under the rule of Duke Leto Atreides I, was ordered to take over the planetary fief of Arrakis in 10191 AG. (Dune)
Frequently asked questions
- What was Castle Caladan?
- Castle Caladan was the official residence of the ruling clan of the planet Caladan. It was an ancient structure of very old stone and wood, with many rooms and halls and vaulted ceilings of patterned wooden beams, standing beside a great river and the farmland owned by House Atreides.
- How long did House Atreides hold Castle Caladan?
- Castle Caladan was the home of House Atreides for twenty-six generations, until the House, under the rule of Duke Leto Atreides I, was ordered to take over the planetary fief of Arrakis in 10191 AG.
Sources
- BookDune, Frank Herbert, Chilton Books, 1965
Spotted a factual error or a primary source we missed? Email a correction. Every flagged claim gets reviewed.
Followed from this entry

Caladan: the ocean world the Atreides left
A rain-soaked world orbiting Delta Pavonis, held by House Atreides for twenty generations. Paul was born there, before Arrakis.

Arrakis
Arrakis, known as Dune and later as Rakis, was a harsh desert world in the Canopus system and the only natural source of the spice melange. Home to the Fremen and the sandworms, it became the seat of the Atreides empire and the center of the known universe.

House Atreides
House Atreides was a respected House Major of the Galactic Padishah Empire, ruled by a Duke and seated for twenty-six generations on the ocean world of Caladan. Through Paul Muad'Dib and his son Leto II, the Atreides line rose to rule the Known Universe before passing into a bloodline scattered across the millennia.

Leto Atreides I: the Duke betrayed on Arrakis
Duke of House Atreides and father of Paul. Shaddam handed him the spice fief of Arrakis, and the Harkonnens killed him there in 10191.
Also in House Atreides

Alia's Temple: the fane of St. Alia of the Knife
Alia's Temple, also called Alia's Fane, was the colossal temple in Arrakeen dedicated to the worship of St. Alia of the Knife. Raised beside Paul's Keep as one of the wonders of the universe, it drew pilgrims from across the Imperium, hid dungeons beneath its maze of corridors, and became the stage for the fall of the Regent Alia Atreides.

Arrakeen conservatory
The Arrakeen conservatory was a luxurious private garden built on the roof of the government mansion at Arrakeen, crowded with exotic wet-climate plants and a wasteful fountain. To the Fremen it was anathema, a weirding room, yet it came to embody Liet-Kynes' dream of a green Arrakis.
Mentioned in19 entries
Archducal Palace of Ecaz: seat of the Mahogany Throne
The Archducal Palace was the seat of government on Ecaz and the home of the ancestral Mahogany Throne, and it was twice taken from the family that owned it. Rebels drove Archduke Ferdinand out of it during the Ecazi Revolt, and a Moritani bombardment later burned the throne itself to ash.
Armand Ecaz
Armand Ecaz was the Archduke of House Ecaz and sovereign of the planet Ecaz, a high noble of the Landsraad and an avowed enemy of House Moritani who fought two Wars of Assassins against Grumman and stood as an ally of Duke Leto Atreides.
Battle of Caladan
The Battle of Caladan was an attempted Harkonnen and Moritani assault on the Atreides homeworld in the expanded novel Dune: House Corrino. Mentat Thufir Hawat repelled it without a shot, using projectors to fake an overwhelming defensive fleet.
Bronso of Ix: the Historian Executed for Doubting Muad'Dib
Bronso of Ix was the Ixian historian whose condemned words open Dune Messiah, a scholar put to death for writing about Paul Atreides as a man rather than a god. Frank Herbert gave him only a death cell interview and a book title. The later novels by Brian Herbert and Kevin J. Anderson turned him into Paul's childhood friend and secret ally.
Caladan: the ocean world the Atreides left
A rain-soaked world orbiting Delta Pavonis, held by House Atreides for twenty generations. Paul was born there, before Arrakis.
Chiara: the Harkonnen spy in Castle Caladan
Chiara Rash-Olin was an elderly lady in waiting from the Imperial Court of Kaitain who served Kailea Vernius on Caladan while secretly reporting to Baron Vladimir Harkonnen. Her whispered manipulations drove Kailea to bomb Duke Leto Atreides' skyclipper, a plot that killed young Victor Atreides, and when her treachery was exposed Kailea stabbed her through the heart.
Harishka
Harishka was Mother Superior of the Bene Gesserit through the Turbulent Era, guiding the Sisterhood across the last years of Elrood IX and the reigns of Shaddam IV and Paul Atreides. She watched over the final steps of the Kwisatz Haderach breeding program.
Helena Atreides
Lady Helena Atreides, born Helena Richese, was the wife of Duke Paulus Atreides and the mother of Leto Atreides I. Estranged from her husband and loyal to House Richese, she secretly arranged the assassination of Paulus and was exiled to a religious order on Caladan, where she died decades later.
House Ecaz: the Archducal House of the Sculptor's Paradise
Ecaz is Frank Herbert's planet of fogwood and drugs, and House Ecaz is the family that rules it in the Brian Herbert and Kevin J. Anderson books. Under Archduke Armand Ecaz the House fought two Wars of Assassins with House Moritani, lost its heirs and left Armand as the last of his line.
House Moritani: the Feuding House of Grumman in Dune
House Moritani ruled Grumman and is known in Frank Herbert's Dune for one thing, its War of Assassins against House Ginaz. The Brian Herbert and Kevin J. Anderson books add Viscount Hundro Moritani, whose feud with House Ecaz ended with the House wiped out.
Ilesa Ecaz
Ilesa Ecaz was the last surviving daughter of Archduke Armand Ecaz and the intended bride of Duke Leto Atreides I of Caladan. She was killed at her own wedding in the War of Assassins of 10187 AG.
Kailea Vernius
Kailea Vernius was a daughter of House Vernius of Ix who became the first concubine of Duke Leto Atreides I and mother of his first son, Victor. Driven by ambition for her child and manipulated by a Harkonnen spy, she plotted to kill Leto, and the scheme instead killed her own son.
+ 7 more
Get new articles in your inbox
No spam. New lore drops, canon conflicts, and deep dives only when they’re worth reading.
Some links on Lore Fortress are affiliate links. If you buy through them we earn a small commission at no extra cost to you.