Trans-Iranian Railway


World Heritage Identification Number: 1585

World Heritage since: 2021

Category: Cultural Heritage

Transboundary Heritage: No

Endangered Heritage: No

Country: 🇮🇷 Iran (Islamic Republic of)

Continent: Asia

UNESCO World Region: Asia and the Pacific

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The Trans-Iranian Railway: A Testament to Engineering and National Pride

The Trans-Iranian Railway, inscribed as a UNESCO World Heritage Site in 2021, stands as a remarkable testament to engineering prowess, national resilience, and the spirit of collaboration. This expansive railway network stretches across 1,394 kilometers, connecting the Caspian Sea in the northeast with the Persian Gulf in the southwest, traversing diverse landscapes and climates.

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UNESCO Description of the World Heritage Site

The Trans-Iranian Railway connects the Caspian Sea in the northeast with the Persian Gulf in the southwest crossing two mountain ranges as well as rivers, highlands, forests and plains, and four different climatic areas. Started in 1927 and completed in 1938, the 1,394-kilometre-long railway was designed and executed in a successful collaboration between the Iranian government and 43 construction contractors from many countries. The railway is notable for its scale and the engineering works it required to overcome steep routes and other difficulties. Its construction involved extensive mountain cutting in some areas, while the rugged terrain in others dictated the construction of 174 large bridges, 186 small bridges and 224 tunnels, including 11 spiral tunnels. Unlike most early railway projects, construction of the Trans-Iranian Railway was funded by national taxes to avoid foreign investment and control.

Encyclopedia Record: Trans-Iranian Railway

The Trans-Iranian Railway was a major railway building project started in Pahlavi Iran in 1927 and completed in 1938, under the direction of the then-Iranian monarch Reza Shah. It was entirely built with indigenous capital, and links the capital Tehran with Bandar Shahpur on the Persian Gulf in the south and Bandar Shah on the Caspian Sea in the north, via Ahvaz and Ghom. In 1961, under Reza Shah's son Mohammad Reza Pahlavi, it was extended from Bandar Shah to a new terminus in Gorgan. During the land reforms of Mohammad Reza Pahlavi in 1963, as part of the "White Revolution", the Trans-Iranian railway was extended to link Tehran to Mashhad, Tabriz and Isfahan.

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Additional Site Details

Area: 5,784 hectares

UNESCO Criteria: (ii) — Significant interchange of human values
(iv) — Outstanding example of a type of building or landscape

Coordinates: 35.6583055556 , 51.3983333333

Image

Image of Trans-Iranian Railway

© Alireza Shakernia, CC BY-SA 3.0 Resized from original. (This derivative is under the same CC BY-SA license.)

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Nearby World Heritage Sites

Golestan Palace
3 km — Iran (Islamic Republic of)
The Persian Caravanserai
67 km — Iran (Islamic Republic of)
Soltaniyeh
249 km — Iran (Islamic Republic of)
Hegmataneh
278 km — Iran (Islamic Republic of)
Masjed-e Jāmé of Isfahan
333 km — Iran (Islamic Republic of)

Country Information: Iran (Islamic Republic of)

Flag of Iran (Islamic Republic of)

Official Name: Islamic Republic of Iran

Capital: Tehran

Continent: Asia

Population (2024): 91,567,738

Population (2023): 90,608,707

Population (2022): 89,524,246

Land Area: 1,622,500 sq km

Currency: Iranian rial (IRR)

Country Data Sources

Last updated: January 18, 2026

Portions of the page Trans-Iranian Railway are based on data from UNESCO — World Heritage List Dataset and on text from the Wikipedia article Trans-Iranian Railway, licensed under CC BY-SA 4.0. Changes made. Additional original content by World Heritage Explorer (WHE), licensed under CC BY-SA 4.0. WHE is not affiliated with UNESCO or the World Heritage Committee. Legal Notice. Privacy Policy.

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