Ficus Benjamina is a very popular houseplant around here. I've got several of them, some of which I'm trying to train into bonsai.
Most of mine live in my little greenhouse, more out of convenience than need, but I have one that spends the entire summer outside. Our winters are fairly mild so I even put it outside during the day in winter.
As has been mentioned, they are evergreen trees, but they have a tendency to drop their leaves when stressed by being moved to unfamiliar conditions. I have one that was kept in my lounge for years and received no sun at all. It grew long and spindly but still remained fairly healthy. One day I decided to try moving it outside. The leaves all got burnt and eventually fell off, but the new growth was far stronger and it's now thriving. As it's now rather big for its pot, I keep it in my greenhouse because I'm afraid it will blow over when it gets windy.