With bad knees, where to enjoy great views of Lisbon for free?

There are many lookouts here in Lisbon.
Take tram 28 or better yet tram 12
to go to one of them in Lisbon downtown.

Or taking a funicular all the way up and down is fun
but it's kind of overpriced.
And the line is always expected.

Then there is another free and easy way
to watch the beautiful orange roofs.

Most travelers know
Square D. Pedro IV as the Rossio Square.
From there only 5 minutes on foot with no uphill
can take you to my best two spots.

Rossio Square

(1) At the Rossio Train Station
From the square, walk up to the Restaudores Metro station.
Easy walk with no uphill at all.
Take the escalators all the way up and get out.
And you can see ST. GEORGE'S CASTLE.

(2) At the Chiado Armazens
On the top level of the armazens,
there are free, clean toilets.
The view from the bathroom is just breathtaking.
I love this view.

view from the bathroom 

You can avoid any hill.
From the Rossio sqaure, take Rua Aurea
Pass the santa justa lift and head to the Comerce Square.
On your way there you can see H&M store on your right.

Line to take the Santa Just lift 

At Armazens Grandela(H&M), turn left and you will see Mango.
Just go in the store as they have a lift.

Next to H&M, when you see this alley go in.

Or right next to Mango, 

you can see a door to the lift,
which takes you to the top floor of Chiado Armazens

Go through the floor door
from the left on this picture
and take the lift to the top floor
at the shopping center. 

There you can enjoy your lunch at the cafeteria, too.

On your way out google Camões Square
and find your way to the back of the armazens.
There are a lot of shops to visit around the square
and there are some of the places well worth visiting.