Paris is divided into 20 arrondissements that spiral clockwise like a snail shell from the Louvre, and that single fact unlocks the whole city: the number tells you instantly how central you are and roughly what kind of Paris surrounds you. Learn the spiral, learn the metro that stitches it together, and the city shrinks from intimidating capital to a set of walkable villages.

The other thing to internalise before you arrive is that Paris now runs on advance bookings and phone-based everything: the Louvre sells timed entry slots, Versailles scans e-tickets, the metro accepts contactless and app-based passes, and restaurant reservations happen online. A connected phone is not a luxury here; it is the key that opens the doors. This guide covers the arrondissement logic, transport, museum culture, day trips, cafe etiquette, honest costs and how to keep that phone online for the whole trip.

In this guide

The arrondissement logic: how Paris is organised

The snail shell

The 1st arrondissement wraps the Louvre and the Tuileries; the numbers then spiral outwards clockwise, crossing the Seine and back, until the 20th lands in the city’s north-east. Low numbers (1st to 8th) mean the monumental centre; teens mean residential neighbourhoods with fewer tourists and better-value everything; the river splits the city into the Right Bank (north, historically commerce and grandeur) and Left Bank (south, historically academia and cafes). Addresses always include the arrondissement, so a restaurant listed in the 11th tells you at a glance it is an eastward metro ride from the centre and probably better value than its 6th-arrondissement equivalent.

Where to base yourself

For first-timers, the sweet spots are Le Marais (3rd and 4th: historic, walkable to the islands and the Louvre, lively into the evening), the Latin Quarter and Saint-Germain (5th and 6th: classic Left Bank, bookshops and cafes, pricier in the 6th), and the 1st or 2nd for maximum centrality. Montmartre (18th) trades convenience for village charm and views; the 10th and 11th are the food-and-bars choice with quick metro access to everything. Wherever you stay, proximity to a metro station matters more than proximity to any single sight.

Getting around: metro, RER and Navigo

The metro’s 16 lines put a station within roughly 500 metres of almost any address in central Paris, trains run about every 2 to 5 minutes, and service typically runs from around 5.30am to just past midnight, later on weekend nights. The RER suburban lines cut express paths through the centre and reach the airports and Versailles.

Fares and passes

Paris has simplified fares in recent years: as of 2026 a single metro or regional train ride within the Île-de-France region typically costs around 2.50 EUR flat, with buses slightly cheaper, loaded onto a reloadable Navigo Easy card or a phone-based pass rather than the old paper carnets. The weekly Navigo (Monday to Sunday, around 30 to 35 EUR) is excellent value for a full week of riding; day passes fill the gap for shorter stays. Airport trains are priced separately and higher. Buying and topping up happens at station machines with contactless cards, or in transit apps on your phone, which is one more small reason to have working mobile data from day one.

Airport connections and street smarts

From Charles de Gaulle, the RER B reaches central Paris in around 35 to 50 minutes for a fare typically in the low teens of euros; from Orly, the metro Line 14 extension has made the run into town straightforward. Official taxis charge flat rates to central Paris (hedged: typically around 55 to 65 EUR from CDG as of 2026). On board any train, the main risks are pickpockets on tourist-heavy lines (1, 4, and the RER B especially) and phone snatching by the doors just before they close: hold your phone away from door areas and keep bags zipped and forward. Our solo travel safety guide covers the wider toolkit.

Museums and the timed-entry culture

Paris museums have moved decisively to timed online entry, and planning around that reality is the difference between a smooth cultural day and an hour of queue regret. The Louvre requires a timed slot in practice (book weeks ahead for peak season; closed Tuesdays); the Musée d’Orsay (closed Mondays) and the Orangerie run the same way at smaller scale; Sainte-Chapelle’s stained glass and the Eiffel Tower’s summit both reward booking the moment your dates firm up.

Tactics that actually work

Book the first morning slot or a late evening opening (the Louvre and Orsay typically run at least one late night weekly) for the thinnest crowds. Keep e-tickets in your phone wallet and screenshots as backup, and arrive with battery and data, since gate staff scan from your screen. Many national museums are free on the first Sunday of some or all months, which is wonderful for budgets and terrible for crowds; decide which you are optimising for. And build in one non-blockbuster museum (the Rodin’s sculpture garden, the Carnavalet’s free Paris history, the Musée Marmottan’s Monets) where you can simply wander in and breathe.

Day trips: Versailles and beyond

Versailles is the essential excursion: the RER C runs from central Paris to Versailles Château Rive Gauche in around 45 to 60 minutes, and the palace is closed on Mondays. Book a timed palace entry online, arrive early or aim for mid-afternoon, and give the gardens (free on most non-spectacle days) and the Trianon estate as much time as the Hall of Mirrors. Beyond Versailles: Giverny’s Monet gardens make a gentle half-day roughly April to October via train from Gare Saint-Lazare plus a shuttle; Reims and its champagne houses sit around 45 minutes away by TGV; and Disneyland Paris is a direct RER A ride. All of them are e-ticketed, timed or both, which keeps the connected-phone theme running; if you are extending into a multi-city rail itinerary, our Europe rail trip connectivity guide picks up where the RER ends.

Cafe etiquette: how to order like a local

Parisian cafes run on a small set of unwritten rules that, once learned, make the city dramatically friendlier. Always open with bonjour (bonsoir after dusk) before ordering anything. Prices legally vary by where you sit: the same espresso costs less standing at the counter (au comptoir) than seated, and terrace seats can carry a further premium; this is normal, posted on the menu, and not a scam. Un café means a single espresso; ask for un café allongé or un crème if you want something longer or milkier. A carafe d’eau (tap water) is free for the asking and perfectly good. Service is included in prices by law (service compris), so tipping is a small round-up for good service, not an obligation or a percentage exercise. Above all, the seat is yours once you have ordered: lingering for an hour over one coffee is not rude, it is the entire cultural institution.

What Paris costs

Paris is expensive by European standards but manageable with the right patterns: the lunchtime formule or menu du jour is the best-value restaurant eating in the city, bakeries make superb cheap breakfasts and picnic lunches, and the metro makes taxis mostly optional.

ItemTypical 2026 range
Espresso (counter / terrace)around 2 to 2.50 EUR / 3 to 5 EUR
Bakery lunch (sandwich, pastry, drink)around 8 to 12 EUR
Menu du jour luncharound 18 to 28 EUR
Dinner main in a bistroaround 20 to 35 EUR
Metro single farearound 2.50 EUR
Major museum entryaround 13 to 22 EUR
Mid-range double roomaround 150 to 280 EUR per night

Hotel prices spike around fashion weeks, major trade fairs and late spring; if your dates are flexible, January to March and November offer the same city at a real discount.

Staying connected in Paris

Mobile coverage in Paris is excellent, with fast 4G and 5G across the city and signal in most of the metro. The question is not coverage but what you pay for it. EU roam-like-home rules mean EU and EEA SIM holders can use their domestic allowances in France at no extra cost; travellers from the UK, US, Canada, Australia and everywhere else face whatever their home operator charges, which ranges from tolerable daily fees to genuinely nasty per-megabyte rates.

A prepaid travel eSIM removes the uncertainty. With Viasimo you buy a one-off prepaid plan for France before you fly, receive it by email instantly, and install it via QR code in minutes; your home SIM stays active alongside for calls and bank verification texts, and there is no contract or post-trip bill. Given how much of this guide runs through your phone (timed museum tickets, metro passes, restaurant bookings, RER schedules), that connection earns its keep by the first morning. Pick a France plan on the France destination page, or a regional Europe plan via the Europe destination page if Paris is one stop of several; our best eSIM for France guide compares the options in detail. Check your phone against the device compatibility checker before buying, and 24/7 support is there if installation snags.

Next steps: plan and book

Work backwards from the scarce things: pick your base arrondissement and book the room, then lock the timed entries (Louvre, Eiffel Tower summit, Versailles) for specific days, and leave at least one day gloriously unplanned for cafe terraces and aimless walking, which is the most Parisian itinerary item of all.

Then spend five minutes making the trip run smoothly: order your France eSIM from Viasimo, install it over home Wi-Fi, load a Navigo pass when you land, and walk out of the station with maps, tickets and translations already working. Paris rewards preparation precisely so it can look effortless.