I have to write a proposal about a structure I would like to visit in order to research how it stays in place and is anchored down. Structure as in a bridge, building, etc. I want it to be something a little lesser known not like the St. Louis Arch, golden gate bridge or anything like that, but i want it to be known enough that there is information about it online that would help me find out more about it. It can be located anywhere in the world, and I would prefer it were something that looked cool and you possibly had to wonder how it stays up or it just looks really cool is Ok. Any help on ideas would be great.