The most expensive home for sale in Paris is a massive $280 million mansion right next to the Eiffel Tower, and it's owned by 2 mysterious sisters of 'a rich French dynasty'

The mansion's location at the intersection of Avenue de Suffren and Quai Branly in the ritzy seventh arrondissement is one of the most sought-after areas of Paris.

The average price per square foot in the seventh arrondissement is about $1,235, but luxury properties can cost up to $2,787 per square foot.

"Since the end of 2018, we've noticed increased interest in the 7th linked to Brexit with the return of French citizens from abroad who have a high budget at their disposal," Dominique de Saint Priest of the Era Saint Priest agency told Paris Property Group.

The owners of the mansion, reportedly two elderly sisters who are "representatives of a rich French dynasty," have forbidden Kalinka Realty to publish photos of the interior and any additional details about the home, the company told Business Insider.

But it wouldn't break the record — even within France. In 2015, Mohammed bin Salman, the Saudi crown prince who has been at the center of human rights scandals such as the death of the death of journalist Jamal Khashoggi, bought a 17th-century chateau just west of Paris for $300 million.