Quebec City is a beautiful and historic city with plenty to see and do. Here's an ideal itinerary for 3 days in Quebec:

Day 1:

• Start your day with a visit to the iconic Chateau Frontenac, a grand hotel that dominates the city skyline. Take a stroll around the grounds and enjoy the views of the St. Lawrence River.
• Next, head to the nearby Place Royale, a charming square that was the site of the city's founding in 1608. Explore the narrow streets and historic buildings, including the Notre-Dame-des-Victoires church.
• For lunch, head to the trendy Saint-Roch neighborhood and try some local specialties like poutine or tourtière at one of the many restaurants.
• In the afternoon, visit the Musée de la Civilisation, a fascinating museum that explores the history and culture of Quebec and its people.
• End your day with a leisurely stroll along the Terrasse Dufferin, a boardwalk that offers stunning views of the river and the city.

Day 2:

• Start your day with a visit to the Plains of Abraham, a historic park that was the site of a pivotal battle between the French and British in 1759. Take a guided tour to learn more about the history of the area.
• Next, head to the Quartier Petit Champlain, a charming neighborhood with cobblestone streets, colorful buildings, and plenty of shops and restaurants.
• For lunch, try some traditional French-Canadian cuisine at Aux Anciens Canadiens, a restaurant housed in a historic building that dates back to 1675.
• In the afternoon, visit the Basilique-Cathédrale Notre-Dame de Québec, a stunning church that dates back to the 17th century. Take a guided tour to learn more about its history and architecture.
• End your day with a visit to the Observatoire de la Capitale, a tower that offers panoramic views of the city and the surrounding area.

Day 3:

• Start your day with a visit to the Montmorency Falls, a spectacular waterfall that is even taller than Niagara Falls. Take a cable car to the top for stunning views.
• Next, head to the Île d'Orléans, a picturesque island that is known for its agriculture and charming villages. Take a guided tour to learn more about the island's history and culture.
• For lunch, try some local specialties like cider and cheese at one of the island's many farms and restaurants.
• In the afternoon, visit the Musée national des beaux-arts du Québec, a museum that showcases Quebec's rich artistic heritage.
• End your day with a visit to the Fortifications of Quebec, a historic site that dates back to the 17th century. Take a guided tour to learn more about the city's military history and architecture.

I hope this itinerary helps you plan your trip to Quebec City!