Let's see, couple things to address here.
Sharm: Good question. How do I know when to end? I spent a while talking this over with my students. The main reason to end a scene is to get them to read on to the next section. Therefore, you generally want to end in one of three ways. 1) At a moment when something interesting is revealed. 2) At a moment of high tension, with something very interesting about to happen. 3) At a moment where your writing is particularly good, and the reader feels a particular empathy for the characters.
Option One: This works well for mystery style plots. Generally, you want to build a scene/chapter so that it has its own rising action and climax. The climax, therefore, when you're ending with this option is the discovery of something vital and interesting. The reader will continue on to find out what the ramifications of this discovery or revelation are.
Option Two: This is a classic 'cliffhanger' ending. I am wary of this one for writers. Don't do the 'Batman' ending. Remember, each scene should have its own rising action, and should feel complete. In comic books, you can probably get away with a bit more of a cheesy cliffhanger. However, if you do cliffhanger in this way, I think it should be continued in the very next section. I do this occasionally to signify 'Significant change in chapter tone coming up.' IE, I'll write a chapter that is building up to a character's decision to fight. Then, I'll break, and in the next chapter get into the battle itself.
Option Three: Don't underestimate this one. Good writing is always interesting, and it will always make people want to keep going. Even if you don't have a revelation or a cliffhanger, you can pull the reader along simply by writing your characters well, and ending with them being interesting. The reader will think 'I can't stop now. It's so good! I can read one more chapter.'
Hope that helps.
MoD: I bought an Atlas, picked a country, and began designing place names whose sounds fit that country. I didn't go for direct rip-offs. I just tried to use similar-sounding names that seemed like they would fit with the ones in that country. I think it gave my place names a sense of realism.
Gemm: You could always use the name of the asylum in DRACULA. (Can't remember what it is off the top of my head....)
