Itinerary for 2 day trip to Lisboa

Here's an ideal itinerary for 2 days in Lisbon that meets all your constraints:

Day 1:

Start your day with a visit to the historic , one of the oldest neighborhoods in Lisbon. Take a stroll through the narrow streets and alleys, and admire the colorful buildings and traditional tiled facades.
Next, head to the Lisbon Cathedral, also known as the Sé de Lisboa. This impressive Romanesque church dates back to the 12th century and is free to enter.
From there, make your way to the , a stunning viewpoint that offers panoramic views of the city and the Tagus River. It's a great spot to take some photos and soak up the atmosphere.
For lunch, head to the , a bustling food market that offers a wide variety of delicious and affordable dishes. You can sample everything from traditional Portuguese cuisine to international flavors.
In the afternoon, visit the , which houses an impressive collection of Portuguese and European art from the Middle Ages to the 19th century. Admission is free on Sundays until 2pm.
End your day with a visit to a fado house, where you can experience the soulful and melancholic music that is unique to Portugal. Some popular fado houses include Clube de Fado and Casa de Linhares.

Day 2:

Start your day with a visit to the , located west of the city center. Here, you can see the iconic , a 16th-century fortress that was built to defend the city from invaders. You can also visit the nearby , a UNESCO World Heritage Site that is free to enter on Sundays until 2pm.
For lunch, head to the , which is famous for its delicious custard tarts. They're cheap and absolutely delicious!
In the afternoon, visit the , which houses an impressive collection of art and artifacts from around the world. Admission is free on Sundays until 2pm.
End your day with a visit to the , which is known for its lively nightlife. You can find plenty of bars and restaurants here, as well as street performers and musicians. It's a great place to soak up the atmosphere and enjoy some local drinks and snacks.

I hope this itinerary helps you plan your trip to Lisbon! Let me know if you have any other questions or if there's anything else I can help you with.