National Assembly

Visitable only by reservation and then only one Saturday every month. A richly decorated palace built for Marie de Medici in the early 17th century, which is now the French Senate. For those interested in seeing a Parisian monument normally unavailable to the public, or for those interested in the inner workings of the French Government. The large Luxembourg Garden is open to the public year-round. The garden is home to the Medici fountain, a children's playground, and vintage toy boats for hire that children push around in the Grand Bassin duck pond (a 90-year tradition).

One of the most eye-popping sights of Paris, the catacombs represent a network of labyrinthine tunnels, first excavated in the Roman period, that now house the remains of over 6 million burials removed here from the various overcrowded cemeteries and charnel houses all over Paris in the late 18th and early 19th centuries. Well worth a visit: the atmosphere is suitably morbid and gloomy (without being too scary), the dark tunnels containing neatly stacked piles of skulls and long bones. There is a limit to the number of visitors allowed within the Catacombs at one time (200 persons). So, if you arrive just after opening, you must wait until someone exits, approximately 45–60 minutes, before anyone is admitted. Steep stairwell on the exit of the catacombs. Can be challenging for the elderly or the unfit. Tickets can be purchased online at a small premium (€29, includes audioguide), allows you pick a date&time and to skip the long line

Two-level bridge.

Founded in 1671 by Louis XIV as a hospital for 6,000 wounded soldiers—this function explaining the name of the building—the golden-domed Hôtel des Invalides still functions as an infirmary and now also houses the Musée de l'Armée. The church attached, l'Eglise du Dôme, houses the tomb of Napoleon.

A symbol of Paris and one of the most famous landmarks in the world. Built by Gustave Eiffel in 1887-1889, the tower was almost torn down in 1909 and only saved due to its use as a telegraphy antenna. The queues can be very long. The tower allows online reservations at its website. You can select a date and time frame. If you miss the time on your ticket, you have lost your money. The north, west, and east pillars have elevators that go to the first and second floors; the south pillar has stairs that can be climbed to the second floor. To reach the top floor, an additional elevator ride is required, and the wait for this can be very long as well. Disabled visitors are not allowed beyond the second floor due to safety concerns. Taking the Métro as far as Ecole Militiare and then strolling up the Champ de Mars is a lovely way to arrive at the tower. Another phenomenal approach is to exit the Metro at Trocadero and see the Eiffel Tower from the other side of the Ecole Militaire.

The official residence of the President of France since 1848. Dating to the early 18th century, it contains the office of the President and the meeting place of the Council of Ministers. It is located near the Champs-Élysées in the 8th arrondissement of Paris, the name Élysée deriving from Elysian Fields, the place of the blessed dead in Greek mythology. Not open to the public, except occasionally during the annual National Heritage Days (usually a weekend in mid-September). Important foreign visitors are hosted at the nearby Hôtel de Marigny, a palatial residence.

A controversial church serving as de facto headquarters of the arch-traditionalist Society of Saint Pius X, who occupied the church in 1977 and have ignored subsequent eviction orders.

For an interesting take on Paris, check out the underground sewers of Paris. See swords found in the sewers over the years and get an appreciation for what it takes to keep Paris running.

The first concrete church

This museum is in the historic Invalides complex and presents the history of the French Army. It is co-located with Napoleon Bonaparte's tomb (entry to which is included in the ticket price). Most of the exhibitions are very old fashioned, and the coverage of the First World War is surprisingly limited. A highlight is the Musée des Plans-Reliefs, which displays painstakingly accurate models of French fortresses and includes its own shop.

It was conceived by Louis XV as a grand neo-classical church honouring St. Geneviève, the patron saint of Paris. After the Revolution, the building was converted into a mausoleum for the great philosophers, military, artists, scientists, and heroes of the French Republic. Occupants of the crypt include Voltaire, Rousseau, Victor Hugo, Zola, the Curies, and Alexandre Dumas (reinterred here in 2002). The view from the dome (206 steps) is marvellous. Check tour departure times at the information desk. A fascinating reconstruction of Foucault's pendulum also hangs within the Panthéon.

a Roman Catholic church on the east side of the Place Saint-Sulpice within the rue Bonaparte, in the Luxembourg Quarter of the VIe arrondissement. At 113 metres long, 58 metres in width and 34 metres tall, it is only slightly smaller than Notre-Dame and thus the second largest church in the city. It is dedicated to Sulpitius the Pious. During the 18th century, an elaborate gnomon, the Gnomon of Saint-Sulpice, was constructed in the church. In front of the church itself is the magnificent Place Saint-Sulpice which contains the 'Fountain of the Four Bishops'. The church has a long-standing tradition of talented organists that dates back to the eighteenth century. In 1862, Aristide Cavaillé-Coll reconstructed and improved the existing organ built by François-Henri Clicquot. Though using many materials from Clicquot's French Classical organ, it is considered to be Cavaillé-Coll's magnum opus, featuring 102 speaking stops, and is perhaps the most impressive instrument of the romantic French symphonic-organ era. Its organists have also been renowned, starting with Nicolas Séjan in the 18th century, and continuing with Charles-Marie Widor (organist 1870-1933) and Marcel Dupré (organist 1934-1971), both great organists and composers of organ music. The current organists are 'titulaire' Daniel Roth (since 1985) and 'assistant titulaire' Sophie-Véronique Cauchefer-Choplin. In Saint-Sulpice Sunday organ recitals are held on a regular basis (Auditions du Dimanche, following the High Mass, usually from 11:30am till 12:05pm, during the subsequent mass, a visit of the organ loft is possible).

Housed in an amazing Art Deco building, purpose-built for the 1931 Colonial Exhibition, featuring an elaborate frieze across the front facade that depicts the achievement of French overseas territories. It houses an Aquarium and an Immigration Museum. The aquarium can be seen in about an hour and is popular with families with small children.

The Jewish quarter, with many small delis and shops. Lively on most days except for Saturdays.

One of the three islands on the river Seine

A former fortress and royal residence at the edge of the city, alongside the Bois de Vincennes. Most of the building is open to public.

Mainly used as a concert hall and venue for fashion shows today, the Cirque d'Hiver was built in 1852, as the name would suggest, as a winter venue for circuses.

Ordered by Cardinal de Richelieu (1585-1642), King Louis XIII's prime Minister in 1629 (completed in 1636); originally called Palais Cardinal; it became Le Palais Royal when Anne d'Autriche, Louis XIII's wife, came to live here to get away from the Louvre palace. It eventually housed Louis XIV until the move to Versailles. It includes also a beautiful garden Les jardins du Palais Royal, enclosed by the buildings. It's been the theatre of one of the seminal events of the French Revolution (Camille Desmoulins made a famous declaration here in 1789). The Théatre Français nearby was built in 1716. There are numerous restaurants inside the garden , including famous Le Grand Véfour. There's also the controversial Colonnes de Buren, striped columns installed within the inside yard amid the 17th century architecture.

Between the River Seine and the rail yards attached to Gare de Lyon and Gare de Bercy is a green space which would seem pretty huge if the 12th weren't also the home of the Bois de Vincennes. The park is a good place to hang out waiting for the line to form for sporting events and concerts at AccorHotels Arena.