Pretty much only Mars, as far as a manned flight goes.
On "Nature of Things" they did a trip to Mars show recently. I liked the comment of a US space station long duration record holder regarding the 5 month trip to Mars. He said, "wait until there is a faster space ship".
I'm all for unmanned trips, but the allure of manned trips and inhabitants is nuts, and what for? Even if there were diamonds up there it wouldn't be cost effective to get them and bring them back.
I like the vertical rockets too, and thought it hilarious the notion of a crane and pulley lifting a pallet out of or into the rocket. Definitely a comic book graphic. And the pipe supported liquid oxygen & hydrogen tanks are utterly silly.
They did what they could. It's fun.