Cap aux Diamant Redoubt

Part of my trip to la Citadelle de Québec involved a visit to the Bastion du Roi, which features one of the oldest parts of the fortress: Cap aux Diamant Redoubt. A redoubt is a hardened fortification completely enclosed and separate from larger fortifications. Often it serves as a place of last retreat. In Québec, the redoubt is one of the surviving original French-era fortifications, albeit heavily modified by the British in the 19th century. These graphics illustrate some of those changes.

By 1783, the original French fortification existed outside the growing defensive works of the British. In this map, you can see the notably square shape of the redoubt as the pink square on the right side of the map near the cliff.

La Citadelle, about 1793
La Citadelle, about 1793

In 1823, the British decided to modify the square-shaped redoubt and undertook extensive modifications. The graphic below shows the original redoubt, the square, with the new plan, the hatched work.

Changes to the original redoubt
Changes to the original redoubt

The new plan simplified the structure.

Redoubt as of 1823
Redoubt as of 1823

But eventually, the redoubt was entirely enclosed by the growing fortifications. This shows its location in Bastion du Roi along with the construction of a block house to further fortify the bastion.

Redoubt in Bastion du Roi
Redoubt in Bastion du Roi

Credit for the piece goes to the designers of the various graphics.

Author: Brendan Barry

I am a graphic designer who focuses on information design. My day job? I am the data visualisation manager for the Federal Reserve Bank of Philadelphia. (This blog is my something I do on my own time and does not represent the views of the Fed, blah blah blah legal stuff.) And with my main interest in information design—be it in the shape of clear charts, maps, diagrams, or wayfinding systems—I am fortunate that my day job focuses on data visualisation. Outside of work, I try to stay busy with personal design work. Away from the world of design, I enjoy cooking and reading and am interested in various subjects from history and geography to politics to science to the arts. And I allow all of them to influence my work.

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