They’re not very expensive and in an hour you see all the sights along the river: Eiffel Tower, Louvre, Orsay Museum, little Statue of Liberty, Notre Dame (not sure what state that’s in right now) and more.

Other standard stuff should likely include the Louvre, Orsay, Eiffel Tower, Arc de Triomphe, Sacre Coeur/Montmartre. Maybe Champs Elysees. Stuff not on everyone’s list see list that’s fun: Opera, Napoleon’s Tomb, Eglise de la Madeleine, Saint Sulpice, Medieval Museum, Parthenon, wandering the Left Bank. For LDS folks the temple, which is like a 10 minute walk from the Jardin de Versailles.

Something I really like is Rue Mouffetard, which is a nice foodie street to walk down and buy a baguette and cheese and relax.

We signed up for an electric bike tour of the city which was also great.