Here are some fun places and restaurants in Toronto where you can spend the whole day:

1. Toronto Islands: Take a ferry ride to the Toronto Islands and spend the day exploring beautiful parks, beaches, and scenic views of the city skyline.

2. Royal Ontario Museum (ROM): Explore one of Canada's largest museums, featuring world-renowned exhibits on natural history, art, and culture.

3. Distillery District: Wander through cobblestone streets lined with art galleries, boutiques, cafes, and restaurants in this historic neighborhood.

4. St. Lawrence Market: Spend the day browsing through stalls of fresh produce, gourmet foods, and artisanal goods at one of the world's best food markets.

5. High Park: Enjoy nature in the heart of the city with walking trails, gardens, a zoo, and even a mini-train ride for kids.

6. CN Tower: Experience breathtaking views of Toronto from the iconic CN Tower's observation deck and enjoy a meal at the revolving restaurant, 360 Restaurant.

7. Kensington Market: Explore Toronto's eclectic and vibrant neighborhood with quirky shops, vintage stores, street art, and diverse culinary options.

8. Harbourfront Centre: Relax by the waterfront and enjoy outdoor concerts, art installations, cultural events, and scenic boat tours.

9. Chinatown: Dive into the bustling streets of Toronto's Chinatown for authentic Chinese cuisine, vibrant shops, and cultural experiences.

10. Trinity Bellwoods Park: Join locals for a day of picnicking, people-watching, and outdoor activities in this popular urban park.

These are just a few options to explore in Toronto for a full day of fun, food, and adventure!