Tus, Iran
ancient city in Iran
Tus (Persian: توس, romanized: Tūs) is an ancient city in Khorasan near Mashhad, Razavi Khorasan province, Iran. To the ancient Greeks, it was known as Susia (Ancient Greek: Σούσια). It was also known as Tusa. Tus was divided into four cities, Tabran, Radakan, Noan and Teroid, which in combination formed largest city in the region in the fifth century.
History
According to legend Tous son of Nowzar founded the city of Tous in the province of Khorassan next to today's city of Mashhad. It is said that the city of Tous was the capital of Parthia and the residence of King Vishtaspa, who was the first convert to Zoroastianism. It was captured by Alexander the Great in 330 BCE, and became a key waypoint on the Silk Road.
Tus was taken by the Umayyad caliph Abd al-Malik and remained under Umayyad control until 747, when a subordinate of Abu Muslim Khorasani defeated the Umayyad governor during the Abbasid Revolution. In 809, the Abbasid Caliph Harun al-Rashid fell ill and died in Tus, on his way to solve the unrest in Khorasan. His grave is located in the region.
The public source identifies “Tus, Iran” as ancient city in Iran. This brief keeps that definition visible, then builds a research path around Iran, ancient and city.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Tus, Iran”, the useful work is to connect “ancient city in Iran” to the records capable of establishing context and consequence.
Place names and jurisdictional language are key evidence: both can reveal earlier catalogue descriptions and overlooked record series. The source revision retrieved here is dated Sep 20, 2026. The linked authority identifier is Q681427. VIAF identifies the subject as 132975443. The Library of Congress control number is nr96034543. Authority coordinates are 36.486, 59.518. 2 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.
Modern boundaries and familiar names can conceal earlier jurisdictions or structures that do not align with the present site. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Tus, Iran”, its source revision and the description used here.
- Expand the search: follow Tus, Iran primary sources, Tus, Iran archive and Iran research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Tus, Iran”?
- Which earlier names or jurisdictions may reveal additional records?
- What physical evidence or contemporary plan supports the description?
Search terms from this dossier
This entry incorporates text from “Tus, Iran” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.