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Julien Knez, a Parisian, found photos of Paris taken between 1871 and 1968, and then photographed the same site from the same angle.

Here are some of the pictures from his book “Paris, Fenêtres sur l’Histoire”.

Place Vendôme, 1871

Rue du Faubourg-du-Temple, 1871

Jardin du Luxembourg, 1895

Tour Eiffel, 1900

Place de l’Opéra, 1900

Quai de Conti, 1900

Le Moulin Rouge, 1900

Arc de Triomphe, 1909

“Odéon” Station (Métro), 1910

Boulevard Saint-Denis, 1910

La Seine. Notre-Dame, 1930

Le Printemps. Boulevard Haussmann, 1930

Troops drive under the Eiffel Tower in 1940, the year German forces took over the city.

Place de l’Opéra, 1940

The square at the front of the Notre Dame Cathedral, with a Nazi gunner standing guard, vastly differs from the scene today.

Parisians take cover in Place de la Republique.

Paris residents hide from fire behind cars in Place de la Concorde.

A photographer captures a gun fight in the Rue de Rivoli.

People hide from gunfire in Place de la Concordea behind a fountain.

Tourists pile in and out of Notre Dame Cathedral where tanks paraded in celebration of the Liberation of Paris in 1944.

German soldiers hold up their arms in surrender on the Rue de Castiglione as they walk by what is now The Westin Paris hotel.

German soldiers are marched under armed guard passed the Louvre, where today thousands line up every day to visit the famous gallery.

An American soldier in a Jeep drives past Palais Garnier opera house.

De Gaulle marches down the Champs Elysees After liberation.

President de Gaulle waves from the window of the Hotel De Ville.

People celebrate freedom from Germany on Place de la Concorde, the square on which Marie Antoinette and others were executed.

The road in Paris's St Michel, where thousands of visitors stroll and shop today, is pulled up in the 1940s.

A young woman and a soldier stand on a tank in front of the Notre Dame Cathedral, one of the world's most revered Gothic churches.

American soldiers in front of Le Grand Palais, 1944