What are some absolutely beautiful places to get married?

We are going to elope. We live in Australia and would probably like to go overseas to get hitched purely so we don't have to invite anyone. We will most likely be travelling without our 2 kids so it doesn't have to be family friendly, just picturesque and easy enough to actually organise to get married there. Budget... well I would say we dont want to spend more than $10,000 on the whole thing and it must include for us to stay in the location for about 4 nights for a "honeymoon" before we head back to oz and take our kiddies on a holiday