Absolutely, I'd love to help you plan your 4-day trip to Ontario! Ontario is a diverse province with so much to offer, from vibrant cities to stunning natural landscapes. Let's create an ideal itinerary for you:

Day 1: Toronto

Start your trip in Toronto, Ontario's bustling capital city. Spend the morning exploring the iconic CN Tower and enjoy panoramic views of the city from the observation deck. Then, head to the Distillery District for lunch at one of the trendy restaurants or cafes. In the afternoon, visit the Royal Ontario Museum to learn about the province's history and culture. End the day with a leisurely stroll along the waterfront at Harbourfront Centre.

Day 2: Niagara Falls

On day 2, take a day trip to Niagara Falls, one of the most famous natural wonders in the world. Start your day with a thrilling boat tour on the Hornblower Niagara Cruises to get up close to the powerful waterfalls. Afterward, explore the charming town of Niagara-on-the-Lake, known for its wineries and historic buildings. Don't forget to sample some local ice wine!

Day 3: Ottawa

Head to Ottawa, Canada's capital city, on day 3. Start your day with a visit to Parliament Hill to learn about Canadian politics and history. Explore the ByWard Market for lunch and pick up some local artisanal products. In the afternoon, visit the National Gallery of Canada to admire its impressive collection of Canadian art. End the day with a relaxing walk along the Rideau Canal.

Day 4: Algonquin Provincial Park

On your final day, immerse yourself in Ontario's natural beauty with a day trip to Algonquin Provincial Park. Spend the day hiking along scenic trails, canoeing on pristine lakes, and spotting wildlife such as moose and beavers. Pack a picnic lunch and enjoy it surrounded by the peaceful wilderness. Don't forget to stop at the Visitor Centre to learn more about the park's ecology and history.

I hope this itinerary gives you a taste of the diverse experiences Ontario has to offer. Enjoy your trip!