For first-time visitors without much time, a bus trip is ideal to orient yourself if you don’t mind the groupstyle travel.
Paris Opentour is in comfortable double-decker buses, with a live or recorded commentary (in whatever language you want).

Use the Opentour Paris bus pass to discover the city for one or two days. You can buy your Opentour Paris Hop On Hop Off pass in advance and have it delivered to your home, your hotel, or a convenient pickup location in Paris if you’re renting an apartment.

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open-tour-paris

Other online ressources: Opentour

Something of a white elephant, the Madeleine has had a checkered career, narrowly avoiding being transformed into a railway station,a stock exchange, a bank, a theater, and yet another temple to the emperor Napoleon. Although building started n 1764, many ups and downs ensued before the Madeleine at last regained its original function in 1842 and was completed as a church. The unmistakable Greek temple form, supported by 52 Corinthian pillars, commands a spectacular perspective down the rue Royale toward the Concorde and beyond. A classic site for society weddings and funerals, the rose marble interior has seen the coffins of Chopin, Josephine Baher, and Marlene Dietrich.

madeleine-place

madeleine-paris

madeleineparis

lamadeleine

Other online ressources: Wikipedia

The City of Paris acquired these gardens from a rich diamond merchant who had them landscaped according to his fancy. Of course, there was no traffic at the turn of the century. The area features a Japanese garden, a Vosge forest, a rock garden, a French-styled park, a small lake bordered with trees, and a beautiful English garden. The last weeks of spring are the best time for a visit.

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jardin-albertkah

albertkahn-paris

garden-albert-kahn

Other online ressources: website