Freebbble!

See detailed license in direct download page. Commercial usage might be possible, contact first.

Singapore Merlion Sentosa Vector EPS is a free Various design resource made by Dribbble user Lemongraphic. As far as I can tell, its license is Personal Use Only.

Helpful hint: Dribbble users are nice. If the license is unknown, it is usually because they forgot to mention it explicitly; not because they were being stingy. Ask nicely and they will probably allow you to use it.