Invalides

Located in the heart of Paris, the Invalides is a vast complex.
The Invalides is most famous for housing Napoleon's tomb, but it was originally built in 1671 by Louis XIV as a facility to care for wounded soldiers. Later, in 1706, the iconic domed church was completed, and Napoleon's tomb lies beneath it.
The Invalides can be reached from many metro stations due to its large grounds. The most frequently used station is Invalides station, which also bears the Invalides' name. From this station, you'll walk through the park to the main entrance. It's quite a distance, so enjoy the scenery as you stroll. Near the main entrance, you can see cannons, remnants of its military past.
If you're going by tour bus, it often stops on the opposite side, the dome side. From this side, you can see the golden domed church up close. This might be a better spot for photography.
For a truly beautiful view of the Invalides, though a little further away, the area around the Grand Palais and Petit Palais is recommended. The sight of the golden dome of the Invalides shining behind the Pont Alexandre III, considered the most beautiful bridge in the world, is truly breathtaking.