.EU stocks and ETFS!?

I am wondering where .EU is traded? I am from USA and want to purchase shares or trade in .EU for example YAO.EU Guggenheim China Small Cap ETF (the Fund), formerly Claymore AlphaShares China All Cap ETF, seeks investment results that correspond generally to the performance of an equity index called the AlphaShares China Small Cap Index (the Index). I am not sure what it is exactly .EU any information would help thanks.