Well it sort of depends what sort of off the beaten track you want!
I quite like wondering round the Le Cimetière des Chiens et Autres Animaux Domestiques its really rather different and some of the graves are incredibly intricate etc. But I might not be your sort of thing?
Le Musée des Arts Forains Le Musée des Arts Forains is a stunning collection of beautiful old amusement park rides and other carnival-related attractions, housed in one of the most absolutely magical spaces I've ever had the pleasure to visit. You WILL need to check and see if it is open to the public when your trip is planned, I BELIEVE the public can book in advance to go and see it THIS IS A REALLY SPECIAL THING TO DO! Honestly it has been closed to the public for years and years.
Have you ever done the Les Catacombes de Paris? They are really worth a visit if not, this history behind them is quite incredible.
The Musée de la Magie and the Musée des Automates Housed in the same building and worth a look.
If you like wondering about then some of these are always worth a visit
Le Défenseur du Temps
Le Passe-Muraille
Métro Arts et Métiers — have you checked out the steampunk Métro station?
Theres the unfinished statue of the Virgin Mary, buried for eight centuries which is in the Abbey of Saint-Germain-des-Prés
Les Enfants du Monde (Children of the World) — a really neat group of twenty-one bronze statues over by the Parc de Bercy.
We often do a sort of roman ruin trip through Paris which can be fun. Paris is still riddled with numerous timeworn traces of its ancient Roman past: a coliseum, baths, and various remains of walls, pillars and carved stones lie strewn about the city, waiting to be discovered by those with an observant eye. While the Roman Baths at Cluny are plausibly the most impressive architectural remnant from the Roman era, the Archaeological Crypt near Notre Dame reveals the centre of the old Roman city of Lutetia, right on the Île de la Cité.
Check out Canal St. Martin in the 10th arrondissement, for the graffiti art.
Have you check out Canal St. Martin? Go in the evening and have a drink its quite well know with the Parisians but often missed by tourists
If its raining go passage hoping I love them and there's only something like 30 left . Some of the most impressive lie strung in a line stretching from Passage Vivienne, behind the Palais Royal, continuing northbound, where they end at rue Cadet
Check out Belleville for the markets and just wondering round.
Angelina salon and patisserie on the Rue de Rivoli is renowned for serving THE best ‘chocolat chaud’ The Palais Royal is not far from Angelina, so you can head over there after your hot chocolate, and stroll through the shopping arcades surrounding the garden
Spend some time on the cobble streets of Ile St-Louis
Check out the Salvador Dali Museum As well as some of Dali’s art and drawings, there are his sculptures of clocks and watches, and these are amazing to see first-hand! You’ll feel like you’ve stumbled across a real hidden gem in the heart of Montmartre.
Have you ever been to La Gare? Its is a restaurant.