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Battery Townsley

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Battery Townsley

Battery Townsley, Military bunker in Marin Headlands, US.

Description

Battery Townsley is an underground military complex in the Marin Headlands built with 26 interconnected rooms and reinforced concrete construction. The structure was designed to house and protect heavy gun installations along the coast.

History

The facility was built between 1938 and 1940 as a defensive coastal position during the Second World War era. It later shifted to scientific research purposes in the 1960s.

Culture

The structure represents mid-20th century coastal fortification engineering and serves as an educational center for military defense history.

Practical

You can reach the site by hiking a steep trail from the Fort Cronkhite parking area nearby. The location offers guided visits at set times to explore the underground spaces safely.

Did you know?

In the 1960s and 1970s, the facility served as a testing ground for experiments simulating nuclear blast pressure waves. This research work transformed the former gun installation into a scientific research site.

Location
Address
Fort Cronkhite, Mill Valley, CA 94941, USA
Opening Hours
Tuesday 10:00-17:30; Thursday 10:00-17:30; Saturday-Sunday 10:00-17:30
Phone
GPS coordinates
37.83586,-122.54350
Latest update
December 9, 2025 20:28

AroundUs brings together thousands of curated places, local tips, and hidden gems, enriched daily by 60,000 contributors worldwide. Discover all places nearby (Marin County).

« Battery Townsley - Military bunker in Marin Headlands, US » is provided by Around Us (aroundus.com). Images and texts are derived from Wikimedia project under a Creative Commons license. You are allowed to copy, distribute, and modify copies of this page, under the conditions set by the license, as long as this note is clearly visible.

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