Galvanised by Britain's vote to leave the EU and Donald Trump's US presidential victory, the far-right National Front leader said voters in France, Germany and the Netherlands would be next to reject the status quo.
"2016 was the year the Anglo-Saxon world woke up. 2017, I am sure, the people of continental Europe will wake up," she told a cheering crowd at a conference hall in the western city of Koblenz, on the river Rhine.
Billed as a "European counter-summit", the Koblenz gathering was also attended by Frauke Petry of the anti-immigration Alternative for Germany (AfD), Geert Wilders of the Dutch anti-Islam Freedom Party, Harald Vilimsky, secretary general of the Freedom Party of Austria and Matteo Salvini of Italy's anti-EU Northern League.
The event came just a day after the inauguration of Trump, who assumed power with a staunchly nationalist address in which he vowed to put "America first".
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The Koblenz participants have made no secret of their admiration for the maverick billionaire, and like him are hoping to shake up the political landscape by capitalising on a tide of anger against the establishment and anxiety over migration.
"We are the start of a patriotic spring in Europe," he said to loud applause.
The Dutch MP, who has vowed to ban the Koran and pull his country of the European Union, currently tops polls ahead of March parliamentary elections.
But observers say he will likely struggle to find the coalition partners needed to govern.
The Koblenz congress, the first of its kind, has been organised by the European Parliament's Europe of Nations and Freedom (ENF) grouping, which was set up by Le Pen in 2015 and now brings together 40 MEPs from nine member states.
"The reasons why people vote for these parties are purely national and are independent from any alleged cross-national cooperation between the far-right," he told AFP.