QUEBEC CITY — It's what's inside the historic wall of Quebec City that makes people want to visit. It's what's outside that makes people want to stay.

To visit without venturing outside the 17th century fortification is to miss the outdoor concerts, vistas and history of the hilltop Plains of Abraham, the up-and-coming Limoilou neighborhood where young chefs ply their trade and acrobats learn their craft, or the buzz of Saint-Roch district just outside Old Quebec. On the outskirts, higher-than-Niagara Montmorency Falls roar from a cliff where zip liners screech across the canyon.

It's a diverse tableau of communities, architecture, public markets, museums and nature, much of it accessible by foot from Old Quebec and all of it stitched together by the city's extensive network of bicycle trails or a quick drive.

Bargains in accommodations are another draw: On a visit at the height of the summer tourism season, I stayed at Hotel Royal William, an old, comfortable hotel in the Saint-Roch district, for barely $75 USD. Royal William and the more upscale Hotel Pur nearby are an engaging 15-minute walk to Old Quebec along shops, cobblestoned alleys and restaurants.

The capital of New France until its conquest by the British in 1759, Old Quebec is recognized by UNESCO as a world heritage site , hailed by the United Nations organization as "a remarkable example of a fortified colonial town, and unique north of Mexico."

The heritage site encompasses the walled Upper Town, overlooked by the commanding Fairmont Le Chateau Frontenac Hotel, and Lower Town, where the explorer Samuel de Champlain put ashore with a few dozen men in 1608. Today, the Place Royale district in Lower Town remains so French in character and appearance that its courtyard and 17th century church, Notre-Dame-des-Victoires, stood in for France in Steven Spielberg's film "Catch Me If You Can" (2002).

There's plenty to absorb in Old Quebec but there are also inviting places beyond. "If you're staying for three days, basically you would have gone through Old Quebec and its next neighborhoods, like Lower Town and the Old Port," says Paule Bergeron, an executive with Quebec City and region tourism. "Then you have the chance to go visit other neighborhoods."

A sampling:

MONTMORENCY FALLS

This beehive of outdoor activity gets the adrenaline going one way or another. Try the zigzag staircase with 487 steps up the cliff, or take the cable car. At 83 meters — 30 meters higher (though far narrower) than Niagara Falls — Montmorency offers a suspension footbridge over the falls, via feratta climbing and a dual zip line that is riveting to watch and another level of excitement to do. The zip line comes with a bonus: Download a free app on the site and you'll come away with a panoramic and close-up video mashup of you sweeping in front of the crest of the falls, very, very far up.

In winter, frozen spray forms Sugar Loaf, a huge cone of ice at the foot of the falls, all illuminated at night. Ice climbers scale cliffs framing the waterfall. Getting there: A bicycle ride of just over 8 miles or 13 km, almost all on dedicated bike paths; 20 minutes by car; or by bus. When: Park is accessible year-round. Cable car is year-round except Jan. 7-25 and March 9-April 14. The zip line for this season ends Oct. 8, reopens in spring.

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THE MONTCALM ARTS DISTRICT

Quebec and international art are the draw at Musée national des beaux-arts du Québec in this high-elevation neighborhood, named for the French general whose forces were overcome by British invaders on the Plains of Abraham. On the plains, free and ticketed concerts roll through the summer, including an 11-day festival in July that is one of Canada's largest outdoor music events. It's a neighborhood distinguished by galleries, bookstores, urban terraces for pub-crawling and streetlamps decorated with reproduced works from the art museum.

Getting there: A 20-minute walk from Chateau Frontenac, the towering landmark of the walled city. When: Year-round, with the concert season geared to summer.

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OLD PORT and the PROMENADE SAMUEL-DE-CHAMPLAIN

The promenade is a river-front section of a bicycle and walking path that extends nearly 30 miles or 50 km from the Quebec city Bridges on the west to Montmorency Falls. It takes in stunning views of the waterfront and cliffs, the sprawling Old Port farmers market, and grain silos that are transformed at night into light sculptures with colors of the aurora borealis. How to get there: Right outside Lower Town. When: Year-round, bicycling as deep into winter as you can stand the cold. The Old Port market is open each day year-round but expected to close in the spring to make way for a new market in the Limoilou district. A smaller farmers market will take its place near Place Royale.

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LIMOILOU

The Old Port's loss will be Limoilou's gain when the city's premier farmers market opens under a glass roof next year. Limoilou has the undercurrent of a rising neighborhood, with cafes, restaurants and shops moving in; a major concert venue (featuring Paul McCartney in September); and an old church that has been converted into a school for acrobatics and the circus — a tradition in the province, which is the birthplace of Cirques du Soleil. Getting there: A half-hour walk from the center of Old Quebec or 10-minute bike ride. When: Year-round.