Port-Royal Abbey

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.

The magnificent setting of The Phantom of the Opera, the inside is as opulent as the outside. However, since the opening of the Opera Bastille (12th) in 1989, the Palais Garnier has been reserved mostly for dance performances, particularly ballet.

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.

Enter Bastille station through any entrance or on any train and then make your way to the Bobigny/Pablo Picasso-bound platform. All that's left of the fortress whose front steps used to lead up from place de la Bastille are some foundation stones which you can see while waiting for a north bound train on this metro platform. There are maps and explanations showing where the fortress used to be relative the place and surroundings (basically the location of the old front steps are now occupied by Café des Phares).

Two-level bridge.

A sculpture by Auguste Rodin in memory of the French novelist Honoré Balzac. The artwork is sometimes considered the first truly modern sculpture.

The east wing of the Palais de Tokyo holds the modern art collection of the city of Paris, dating roughly from World War I to date (the older part of the collection is at the Petit Palais in the 8th), including around 10,000 works.

Beautiful round "square" with an equestrian statue of King Louis XIV and matching 17th century buildings.

Once the dye works for royalty, it is now a museum.

A must for anyone interested in the history of the American Revolution. This small cemetery includes three mass graves from the French Revolution, plus a section that includes many of France's most noble families that lost members during the French Revolution and consequently have a continuing right to be buried there. In the farthest right hand corner is the tomb of General Lafayette, the friend and fellow soldier of George Washington. Beside him is his beloved wife plus other members of her family, the de Noailles, who were almost completely wiped out during the French Revolution because of their closeness to the Court. Since 1834 the American flag has apparently flown continuously over his grave, even during the German occupation of Paris during World War II. Well worthy of a visit.

One of Paris's best kept secrets, painted by Monet numerous times. It is a very elegant centre of green in the middle of cosmopolitan Paris. Make sure you check out the statues, entrance rotunda and the surrounding mansions. Thanks to Haussmann himself this precious slice of parkland was reserved for the enjoyment and leisure of the people of Paris. It is unusual in France due to its casual, informal "English" style planning, and is a contrast to other Parisian parks such as the classically laid out and formal Luxembourg Gardens and the Tuileries. Randomly placed throughout the park are scaled-down architectural replicas including an Egyptian pyramid, Dutch windmill, and a Chinese fort. Free Wi-Fi in the park.

One of the largest collections outside Asia of Southeast Asian, Indian, Afghan, Chinese, Japanese, and Korean art.

Paris's international exhibition centre (the 4th largest in Europe) has millions of visitors annually.

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.

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.

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