Pastéis de Belém (also know as Pastéis de Nata) are famous pastries from Portugal.
Belem is a short 10 min tram ride from the center of Lisbon
where you can go to the famous Pastéis de Belém shop.
We pretty much died and went to heaven after biting into them and trying some other pastries from the shop.
Still kicking myself for not stopping back there and loading up for our flight back to Madrid.
Belém also has a Monastary, Palace and the Belém Tower, which we would have loved to visit but were caught in a torrential downpour and had to find cover in an Italian restaurant on the water (oh darn).