No idea what it is, but it's growing in the Algarve Portugal

Looks like our Brugmansia - Angel's Trumpet plant. It's a tropical beauty and quite fragrant in the evening, but all parts are toxic (it's listed as a poisonous plant here in Queensland) - not at all child friendly.

Yes definately Brugmansia......and it does smell beautiful, but Berneih is right.......very toxic

These are all the rage over here right now, for the last few years everyone seems to be trying to grow them. They are pretty!

I seem them a lot in yards around here too, Wohlibuli.