TheBecause I work a lot with children, I can guarantee you there is no age to appreciate a guided tour!
If you really engage the conversation with kids in a museum or in the street, you would be surprised to discover the city or the masterpieces through their eyes.
That's the reason why it wouldn't be fair to restrict your vacations in Paris to Walt Disney and the Eiffel Tower, because you are affraid they won't get involved with what they see.
A lot of tours can be adapted for children. Find below the tours I especially recommend for family trips.
Louvre Museum
Meeting the Masterpieces
2 hours
Orsay Museum
The Modern Art Scandals
2 hours
Versailles Palace
How Versailles Became a Legend
From 2 hrs to a full day
Notre Dame
Heart of the City Island
1 hr to 2 hrs
Remain closed until further notice
Conciergerie Museum
From the Palace to the Prison
1 hr to 2 hrs
Paris Islands
An Open Air Museum
2 hours
Latin Quarter
The Favorite Students Area
2 hours
Le Marais
From its Origins to the Present Day
2 hours
Montmartre
Artists and an Art of Living
2 hours
Right Bank Landmarks
An Open Air Museum
2 hours
Best of Paris
Walk and transports
Half day or full day
Street Art
District 13 Best Walls
2 hours
Palace of Vaux-le-Vicomte
An Ambitious Dream
2 hrs to 4 hrs
Pantheon
Meeting the Great Men
1.5 hours
Opera House
Posthumous Icon of an Empire
1 hr to 2 hrs
Special teenagers !
Crimes and Plots
The Dark Pages of History
2 hours
You are confident your children can follow any tour? Just have a look at the other categories