The Parisian landscape is to undergo a major change in response to the threat of terrorism after city authorities confirmed plans for the erection of a permanent security barrier around the Eiffel Tower.

The €20m (£17m) structure will replace temporary fences first put up in 2012 after the Euro 2012 tournament and which have remained there since 2015 after a series of terror attacks across France.

It will be a massive overhaul for Paris’s most iconic monument, incorporating the space under the tower and two ponds on either side of it in an area about 200 by 300 metres.

According to French daily Le Parisien, the wall will be made of bullet-proof glass and will stand 2.5 metres high.

“Sadly, the risk of terrorism hasn’t gone away,” deputy mayor Jean-François Martins said at a Paris press conference.

“This is a necessity in terms of security, but it will also make it possible to re-establish a link between the forecourt of the monument and the gardens,” he said.

He told journalists: “It’s not a wall, it’s an aesthetic perimeter.”

“All the works to secure the Eiffel Tower are done in consultation with the Architects of the Buildings of France so that it fits as well as possible in the neighbourhood,” he added.

The “anti-ballistic fence”, as Bernard Gaudillère, president of the Society of Exploitation of the Eiffel Tower described it, comes ahead of a wider renovation of the site.

A €300m (£256m) overhaul is planned to modernise the site over the next 15 years in a bid to improve and reorganise tourism at the tower, reduce queuing times and carry out essential maintenance work.

But the wall will mean tourists will no-longer be able to wander under the tower seeking a photo opportunity and must instead pass through security gates to enter the secure compound.

Over the past two years, France has fallen victim to a series of major Islamist terror attacks, including the Charlie Hebdo mass shooting in January 2015 in which 17 people were killed, the Paris attacks in November 2015, in which 130 were killed in coordinated attacks across the city, and the Bastille Day attack in Nice, in which 86 were killed when a lorry was driven into celebrating crowds.

In pictures: Paris attacks Show all 25 1 /25 In pictures: Paris attacks In pictures: Paris attacks Paris attacks French police with protective shields walk in line near the Bataclan concert hall Reuters In pictures: Paris attacks Paris attacks Rescuers evacuate an injured person on Boulevard des Filles du Calvaire AFP In pictures: Paris attacks Paris attacks French Vigipirate troops mobilize next to Place de la Bastille AFP In pictures: Paris attacks Paris attacks French soldiers mobilize near to the Place de la Bastille AFP In pictures: Paris attacks Paris attacks Wounded people are evacuated outside the scene of a hostage situation at the Bataclan theatre EPA In pictures: Paris attacks Paris attacks People react as they gather to watch the scene near the Bataclan concert hall Reuters In pictures: Paris attacks Paris attacks French police secure the area outside a cafe near the Bataclan concert hall Reuters In pictures: Paris attacks Paris attacks Rescuers workers evacuate victims near the Bataclan concert hall AFP In pictures: Paris attacks Paris attacks French Prime Minister Manuel Valls and French President Francois Hollande attending an emergency meeting at the Interior Ministry AFP In pictures: Paris attacks Paris attacks Spectators invade the pitch of the Stade de France after explosions were heard outside AP In pictures: Paris attacks Paris attacks A man lies on the ground as French police check his identity near the Bataclan concert hall Reuters In pictures: Paris attacks Paris attacks Police officers man a position close to the Bataclan theatre AFP In pictures: Paris attacks Paris attacks Wounded people are evacuated from the Stade de France in Paris EPA In pictures: Paris attacks Paris attacks Two men evacuate the Place de la Republique square in Paris as a police officer looks on AFP In pictures: Paris attacks Paris attacks Football fans are evacuated from the Stade de France stadium In pictures: Paris attacks Paris attacks An armed police officer Dan Gabriel In pictures: Paris attacks Paris attacks The Stade de France is evacuated after reports of an explosion In pictures: Paris attacks Paris attacks A member of the French fire brigade aids an injured individual near the Bataclan concert hall In pictures: Paris attacks Paris attacks Wounded people are evacuated from the Stade de France in Paris In pictures: Paris attacks Paris attacks Police are seen outside a cafe in 10th arrondissement of the French capital Paris, In pictures: Paris attacks Paris attacks Rescuers assist an injured man on Boulevard des Filles du Calvaire, close to the Bataclan concert hall AFP In pictures: Paris attacks Paris attacks The scene at a restaurant in 10th arrondissement In pictures: Paris attacks Paris attacks The Bataclan theatre - where around 100 people are thought be held hostage In pictures: Paris attacks Paris attacks The Stade de France as it was evacuated In pictures: Paris attacks Paris attacks Forensic experts inspect the site of an attack outside the Stade de France stadium in Saint-Denis AFP