Philadelphia is the birthplace of American independence, where the Declaration of Independence and the Constitution were debated and signed. It's also a very walkable city of rowhouses, murals, great museums, immigrant neighborhoods and serious food, with a gritty, friendly personality that locals proudly defend.

Come for the history, the food and the neighborhoods, and expect to cover a lot of ground on foot. Center City is compact, and most major sights sit within a short walk or ride of each other.

Spring (April to June) is mild and green, with blooming gardens and comfortable walking weather. Best overall, with the busiest tourist season around Memorial Day and the Fourth of July.

Summer (July to August) is hot and humid, with thunderstorms. Go if you plan around air conditioning and evenings; big July 4th events draw large crowds.

Fall (September to October) has crisp air, color and lots of festivals. Best overall.

Winter (December to February) is cold, with occasional snow. Holiday markets and lights, the Mummers Parade on New Year's Day, and quiet museums make it good value.

Check the events calendar. Holiday weekends, large conventions, concerts and Eagles, Phillies, Sixers and Flyers games raise prices and crowd transit.

2 days covers Independence Hall, the Liberty Bell, a cheesesteak and a museum.

3 days (recommended) adds the Museum of Art, Reading Terminal Market, South Philly and a proper evening.

4 to 5 days adds a day trip: Valley Forge, Longwood Gardens in the Brandywine Valley, New Hope or Atlantic City.

Day 1, historic Philadelphia: morning at Independence Hall (reserve a timed ticket ahead; they're free with a small online fee), then the Liberty Bell Center, which doesn't require a ticket. Afternoon at the Museum of the American Revolution, the National Constitution Center or a walk through Elfreth's Alley. Evening dinner in Old City or Society Hill.

Day 2, food and art: morning at Reading Terminal Market (try a roast pork sandwich, pretzels and Pennsylvania Dutch treats). Afternoon at the Philadelphia Museum of Art, including a run (or walk) up the "Rocky steps," or the Barnes Foundation (book ahead). Evening in Fishtown or Northern Liberties for bars, music and dinner.

Day 3, choose your own: South Philly's Italian Market and a cheesesteak (Pat's, Geno's, Jim's or Dalessandro's, depending on who you ask). Or go different: Eastern State Penitentiary, the Magic Gardens, University City's museums or a day trip to Valley Forge or Longwood Gardens.

Old City and Society Hill suit first-timers and history lovers: walkable, historic and close to Independence Hall.

Center City and Rittenhouse Square suit shopping, restaurants and transit: central and polished.

Fishtown and Northern Liberties suit bars, music and a young, local scene: need a short ride to the historic sites.

The Museum District and Fairmount suit art lovers and runners: greener, quieter.

University City suits university visits and museums: close to 30th Street Station and Amtrak.

Center City and Old City are very walkable. SEPTA runs subway lines (Market-Frankford and Broad Street), trolleys, buses and Regional Rail, including the airport line. Check current fares, schedules and service alerts, and use a SEPTA Key card or contactless payment where accepted.

The PATCO train connects to New Jersey. Indego bikes are available, and rideshare and taxis are plentiful. 30th Street Station is the main Amtrak and regional-rail hub, and the city is easy to reach by train from New York and Washington, DC.

You don't need a car. Parking in Center City is expensive and limited.

Independence Hall: tickets are timed-entry and must be reserved ahead for most of the year through Recreation.gov (free, with a small non-refundable fee per ticket). Same-day tickets can be limited, especially in peak season. The nearby Liberty Bell Center does not need a ticket but does have a security check.

Security: expect bag checks around historic sites and big events, especially during major commemorations.

Food: cheesesteaks, roast pork with greens and sharp provolone, soft pretzels, water ice, hoagies and a growing restaurant scene. Many restaurants are BYOB; check before you go.

Last call is 2 a.m. Tipping 18 to 20% is standard.

Philadelphia's tourist areas, including Old City, Rittenhouse, Center City and the Museum District, are busy and generally safe with normal big-city awareness. Keep valuables secure, especially on crowded transit and at events.

Some neighborhoods away from the tourist core have higher crime, particularly at night. If you plan to go beyond the usual areas, ask your hotel or a local for advice, and use rideshare after dark. Be aware on SEPTA late at night, and check for service disruptions.

Heat can be intense in summer; drink water and take breaks in air conditioning.

Emergencies: dial 911. Philadelphia has many hospitals and urgent-care clinics, and pharmacies are common in Center City. If you take prescription medications, bring a buffer supply.

Comfortable walking shoes (lots of brick and cobblestones), layers, a compact umbrella, sunscreen and a refillable water bottle in summer, and a warm coat, hat and gloves in winter. A small bag that closes securely is useful for crowds.