Boulevard Poniatowski

The French war department had completed the Thiers wall – including fortifications, a dry moat, a Rue Militaire and a large berm – around 1840. In 1859, the military engineering service gave conditional control to the Paris city council.^[1] The expansion of the land area of Paris in 1860, by annexing bordering communities, created a situation where everything within the Thiers wall was Paris and everything without was not. The Thiers wall, with its accompanying berm and moat, led to a profound disruption and complication of the synergistic relationship between Paris and its suburbs.

Paris city council started upgrading and conversion of some sections of the Rue Militaire into boulevards in 1861, with the (yet unnamed) Boulevard Poniatowski one of the first stretches to open. In 1864, the boulevard was named after Polish-born Józef Poniatowski (1763–1813), 1st Duke of Dalmatia and Marshal of France.^[2] Each section of the upgraded Rue Militaire was then named for a marshal of the First French Empire (1804–1814) who served under Napoleon, leading to the entire ring being collectively called the Boulevards of the Marshals. The Boulevards of the Marshals concept was almost fully realized by 1932, though the final three sections, closing the ring, would not be completed until 2005. Of the 22 boulevards, 19 have been named for Poniatowski or one of his fellow First Empire marshals.

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  A portion of the Thiers wall, showing the berm and dry moat, near the Porte de Versailles
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  Boulevard Poniatowski during the 1931 Paris Colonial Exposition
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  Roadworks in 2011

• No. 5: La Rapée-Bercy station on the former Petite Ceinture railway line
• No. 117: vestige of the Bastion no. 1 of the Thiers wall

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  Between the Porte de Charenton and the Porte de Bercy in 2015
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  Roadworks for the tramway system
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  Building
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  Vestige of the Bastion no. 1 of the Thiers wall.