Not sure why you don't think it looks like a tree?

Fiddle Leaf Fig

Ficus benjamina is another typical indoor tree...popular at the malls.

Ficus elastica will also work.

I have a couple of fiddle leaf figs. They look a bit more like this...

Would a japanese maple or dogwood work?

No, both require winter dormancies. You must think of tropicals unless you're going to turn the heat off.

Ficus benjamina IS a tree! And can get very large (90+ feet) in its natural environment. Obviously does not grow so large as an indoor houseplant but can still develop into a good sized, tree form houseplant. I had to get rid of mine as it grew too large for my home but gave it to my brother who has a much larger house with taller ceilings and plenty of windows. The tree is now about 10' tall and with a full tree-like canopy about 6-8' across.

Your comment about not requiring distinct seasonal changes eliminates any tree that could be safely grown outdoors in your area......like a Japanese maple or dogwood.

An olive tree (Olea europaea) is another possibility.

I know the ficus is a tree, I guess I was just hoping for something that looked less houseplant-like. I always associate ficus with offices. Never thought about an olive tree. That could be nice! I like the shape.

Fishtail Palm is pretty. We have a fountain in the conservatory so it's not a dry climate. :)

Go to an independent garden center with a house plant department, employee on duty whom you can discuss options they are presenting with. Unless you order off the web for home delivery you are going to have to choose from among what is being offered at outlets within driving distance anyway.

The classics are bay and citrus.

there's also things like aralias that you may like. Though to me, they're more shrubby than tree like.

I agree, more shrubby than tree-like..but still a really cool plant. I'll have to add that to the wishlist.

Any experience with a Natal Mahogany?