Here's an ideal itinerary for 3 days in Bangalore:

Day 1:

Start your day with a visit to the iconic Lalbagh Botanical Garden, which is home to over 1,000 species of plants and trees. After exploring the garden, head to MTR (Mavalli Tiffin Room) for a traditional South Indian breakfast. Next, visit the Bangalore Palace, a stunning example of Tudor-style architecture. In the evening, head to UB City, a luxury shopping and dining destination, for some retail therapy and dinner at one of the many restaurants.

Day 2:

Begin your day with a visit to the ISKCON Temple, a beautiful temple dedicated to Lord Krishna. Afterward, head to the Tipu Sultan's Summer Palace, a historic palace that showcases the life and times of the famous ruler. For lunch, head to Vidyarthi Bhavan, a popular eatery known for its delicious dosas. In the evening, visit the Ulsoor Lake, a serene spot where you can enjoy a boat ride or simply relax by the water.

Day 3:

Start your day with a visit to the Cubbon Park, a sprawling green space in the heart of the city. Afterward, head to the National Gallery of Modern Art, which houses a collection of contemporary Indian art. For lunch, head to Brahmin's Coffee Bar, a popular eatery known for its filter coffee and idlis. In the evening, visit the Bangalore Fort, a historic fort that dates back to the 16th century. End your day with a visit to the bustling Commercial Street, a popular shopping destination where you can find everything from clothes to jewelry to souvenirs.

Hope this helps you plan your trip to Bangalore!