Some of the must-visit places in Goa over a 4 to 5-day period include:

1. Old Goa: Explore the historical churches and convents such as Basilica of Bom Jesus and Se Cathedral.

2. Panaji: Visit the capital city for a taste of Goan culture, cuisine, and shopping.

3. Anjuna Beach: Enjoy the laid-back vibe, water sports, and vibrant flea markets.

4. Dudhsagar Waterfalls: Take a day trip to witness the majestic waterfall surrounded by lush greenery.

5. Fort Aguada: Discover the historic fort overlooking the Arabian Sea and visit the nearby lighthouse.

These are just a few highlights, as Goa offers a wide range of attractions for visitors to explore and enjoy.