The Eiffel tower in Paris. (Credit: Julien Knez)

Seventy years ago this month, the Allied forces defeated the Nazis. How have things changed since then?

Parisian-based artist Julien Knez spent two months trying to answer that question. After assembling a number of historic images of the liberation of the French capital, he tried to find the places and angles from where the photos were taken.

"It was very intense to imagine the fights in the streets I know as a Parisian," Knez wrote in an e-mail. He allowed WorldViews to republish some of his collages. You can go to his blog Golem13 to view more photos.

The battle for Paris

One historic photo shows Parisian police officers preparing for a fight with German soldiers, close to the Notre Dame cathedral in 1944.

(Credit: Julien Knez)

Barricades, like this one on Rue de la Huchette, were erected all over the French capital. Since then, the building visible on the photo has been turned into a book store.

(Credit: Julien Knez)

The battle between the Allied forces and the Germans was still raging in August 1944 on place Saint-Michel in Paris.

(Credit: Julien Knez)

In front of today's Orsay museum, resistance fighters were searching rooftops for German snipers.

(Credit: Julien Knez)

A liberated Paris

On Aug. 25, German General Dietrich von Choltitz surrendered.

(Credit: Roger-Viollet/ Julien Knez)

Parisians celebrated and civilians climbed tanks. This photo shows a boy sitting on an armored vehicle on Rue du Montthabor.

(Credit: Julien Knez)

The same day, the senate was taken over by French resistance fighters and the Allied forces.

(Credit: Roger-Viollet/ Julien Knez)

The liberating troops paraded the streets of Paris which attract millions of tourists each year today.

(Credit: Julien Knez)

On Aug. 26, a victory celebration was held on Place de la Concorde.

(Credit: Julien Knez)

The celebration was briefly interrupted by sniper shots, coming from rooftops.

(Credit: Jean Séeberge/ Julien Knez)

Street celebrations resumed shortly afterward. This photo shows the Champs Elysees.

(Credit: Robert Capa/ Julien Knez)

General Charles de Gaulle, accompanied by officers and troops, marches down the famous road.

(Credit: Julien Knez)

Sitting behind barbed wire, a couple enjoyed newly won freedom in the Tuileries park.

(Credit: Robert Doisneau/ Julien Knez)

Celebrations continued until September -- for instance, in front of the Notre Dame cathedral in the city center.

(Credit: Julien Knez)

U.S. soldiers set up roadblocks to prepare for renewed attacks by the Nazis. The war officially ended months later.

(Credit: Julien Knez)

Here's the full photo series by Julien Knez.

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