Toronto

1. CN Tower: This iconic landmark offers breathtaking views of the city from its observation decks and features a glass floor for a thrilling experience.2. Royal Ontario Museum: This world-renowned museum showcases art, culture, and natural history with its extensive collection of exhibits and interactive displays.3. Niagara Falls: Located just outside of Toronto, this natural wonder is a must-see attraction with its powerful waterfalls and various activities such as boat tours and hiking.4. Toronto Islands: Escape the bustling city and visit the Toronto Islands, a group of small islands with beautiful parks, beaches, and recreational facilities.5. Distillery District: This historic neighborhood is known for its charming cobblestone streets, art galleries, boutiques, and trendy restaurants and cafes.

Vancouver

1. Stanley Park: This urban park is a favorite among locals and tourists alike, offering beautiful greenery, walking and biking trails, beaches, and attractions like the Vancouver Aquarium.2. Granville Island: A vibrant and artistic hub, Granville Island features a public market, boutiques, galleries, theaters, and waterfront activities.3. Capilano Suspension Bridge Park: Experience walking high above the forest floor on a suspension bridge, and explore other attractions like treetop walkways and a cliff walk.4. Grouse Mountain: Outdoor enthusiasts will enjoy the activities at Grouse Mountain, including hiking trails, skiing, snowboarding, and a wildlife refuge with grizzly bears.5. Vancouver Art Gallery: This cultural institution showcases a diverse range of artwork, including local and international contemporary pieces, as well as historical collections.

Montreal

1. Old Montreal: Walk along the cobblestone streets of the historic district, lined with charming buildings, lively squares, and iconic landmarks like Notre-Dame Basilica.2. Mount Royal: This sprawling park offers stunning views of the city from its namesake mountain, and visitors can enjoy activities like hiking, picnicking, and ice skating.3. Montreal Museum of Fine Arts: Explore a vast collection of fine arts, sculpture, and decorative arts, including works by renowned artists like Picasso and Rodin.4. Jean-Talon Market: Experience the vibrant food scene at this bustling market, where you can purchase fresh produce, local delicacies, and Quebecois specialties.5. Biodome: This unique attraction allows visitors to explore various ecosystems, showcasing animals and plants from different regions under one roof.

Keep in mind that travel guidelines and travel rules may change anytime, so regularly check for updates to ensure a hassle-free and memorable travel experience.