Buda Tunnel

tunnel, Budapest, Hungary

Written by

The Information Architects of Encyclopaedia Britannica

Last updated

July 20, 2026

Quick Summary

The Buda Tunnel is a tunnel in Budapest, Hungary, designed by British civil engineer Adam Clark. It is located at the Buda bridgehead of the Széchenyi Chain Bridge, the first permanent bridge over the Danube River in Hungary. The tunnel was completed in 1857 and is part of the transportation network that has been key to Budapest's expansion. The square between the bridge and the tunnel is named after Adam Clark and serves as the origin point for Hungary's road network.1

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

5 Britannica Sources

Ask Britannica AI about this topic

Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.

Adam Clark
He also designed the Buda Tunnel at the Buda bridgehead. The square between the bridge and the tunnel is named for him and is the official point of origin of the country’s road network, with a sculptured “zero kilometre stone” in the centre.
Read More
He also designed the Buda Tunnel at the Buda bridgehead. The square between the bridge and the tunnel is named for him and is the official point of origin of the country’s road network, with a sculptured “zero kilometre stone” in the centre.
Read More