The city of Tir Castellan (capital of the Cassian March) was founded in 178 TC by Duke Cas bel-Taren and his wife, Princess Sia bel-Aruthien, on the land granted them by Queen Casta bel-Aruthien for Cas' service in the Seafaring. In compliance with an oath made to Mishya during his Seafaring, Duke Cas commissioned the construction of the largest Temple of Mishya in the Kingdoms. Not wishing to leave out the other gods, Cas also ordered construction of temples to all the other minor gods. The area of the city which hosts the temples came to be called Temple Hill, being the easternmost of the five hills of Castellan. The Temple itself is shaped like a sword laid flat, with the top of the hilt overlooking the waters of Loch Valen. The tip of the sword, nine stories high, overlooks the city to the southwest. Nearby are the domed temple to Chatalize, the brooding hall of Brandt, and the matching temples to the Elemental gods.
In the valley between Temple hill and Redoubt hill, many impressive, multistory buildings were constructed of the same stately blue-grey marble as the temples and the Fortress. Originally built to house the temple workers within the protection of the Old Wall, these structures eventually became the homes and guildhalls of the merchants of the city; becoming the Valley of the Guilds. Here can be found the residence of the Gnome Illusionst Phaedra, as well as her 'Rare and Magical Goods' ship. This district is also home to the Fox's Tail Inn, and Feris bel-Sarn;s Villa.
Redoubt hill is the site of the first settlement of the Cassian March, a massive fortified pell tower constructed on the water's edge. Later, the Fortress was designed by Reymarko Tanilinni of Aligindel, becoming the soaring, imposing edifice that now dominates the hill. Many fortified residences were constructed in the early days in the shadow of the tower, becoming the wealthy district where many local nobles maintain their dwellings.
Wildrun park (requested, some say, by Talabrilden of Aligindel) is a rough, wild patch of wilderness home to ancient standing stones. The park is quite a tame wilderness, now, but the old Druid standing stones like undisturbed in the heart of the city.
The Princess Sia designated the largest hill as Monument hill. Statues of Cas, Sia, Aidan, Tal, Rhenic, Jaegher, Paneg, and many others line the wide Queen Casta street (which opens into a fine view of the Fortress), each standing over 12' tall, and sculpted by Oldruin son of Omdain, famous Dwarf stonemason of The Locks, and shipped by the Alyndia herself up the river Valenadryl. Many private residences and small shops moved in onto Monument hill.
Between Monument hill and Martial Hill lies Taren Field, the open, broad valley used by the army for maneuvers, or in more peaceful times for festivals and other city functions. Martial hill became the barracks for troops in the city in later years, also hosting the city's military docks on Loch Valen.
East of Martial hill lays the Dockyards, a shallow valley where the sturdy riverboats of the Valenadryl are built, and Valen hill, the easternmost hill of the city, home to the great River Tower. South of Valen hill lays the South gate out of the New Wall.
The rest of the city curves south of the five hills, expanding slowly to meet the New Wall, separated from the hills by Empress Brynnia Way, the longest street in the city, running from Mishya's temple along the southern base of the hills, meeting Queen Casta street as it crosses Monument hill, and finally curving southward to meet the Southgate. The Aligindel road comes through the New Wall at Westgate, below the point of the temple of Mishya, and meets Empress Brynnia Way at the Kingdom Plaza, where the Kingdom Tower boasts shields from the nations whence the people of the Cassian March came.
In 177 TC, Fox bel-Rogan brought nearly three thousand Jotunn refugees from the Ice Queen's War into the Cassian March, and settled them there. Duke Cas assigned Paneg to form the Cassian Legion for the defense of the Duchy. In the spring of 177, Tir Castellan was inundated with hundreds of new citizens. Not only did more than two thousand Realmsmen of Tir Sylvania arrive in the city, but only weeks afterwards more than three hundred freed slaves were liberated from Kravak-Barr.
The Realmsmen immediately set to trading what possessions they have for land and buildings. Many of them have carried away valuable magical artifacts and expensive jewels from the far away Realms of the Free Kings. Several Realmsmen immediately become prominent citizens of the March. A Realmswoman called Chalsi started a fine metalsmithing and armory, which is known for the occasional rare magical armor she has traded for or otherwise procured from her home Realm. Tir Sylvania was once famed far and wide for its longbows and archers. A man called Benbow and his five daughters have brought their famous weapons to the Cassian March. In addition, a powerful Priestess of Mishya has come north with the Realmsmen. One of the few Elves among the Sylvanians, Vitala has by virtue of her service to Mishya risen to become high priestess of the temple in Tir Castellan.
In addition, a funeral is held (attended by hundreds) for Wrugar, priest of Archgate. His tomb is placed atop a hill near the city (which will someday be the heart of the Dwarf Quarter) and a statue in his likeness erected atop the tomb. As a tribute to Wrugar Roan has painted a picture of the fallen Hero holding the bridge against the Vom. Wrugar is backlit by a holy aura and in the back ground the cave slowly becomes the straight lines of dwarven construction. At the top of the arches of the picture you can barely make out the face of Archgate smiling down on Wrugar. Finally, there is a stone bear in Wildrun Park, near where the Fey dwell.