Investors are eyeing profits in campgrounds and RV parks as Americans flock to the great outdoors. Camp Margaritaville RV Resort and Cabana Cabins Auburndale, Central FloridaThe trend is also driven by demographics. Sam Zell's Equity Lifestyle Properties, another large REIT that invests in RV parks alongside mobile homes, has also been busy. While it's not clear how much big investors have thrown into RV campgrounds, manufactured housing communities as a whole have seen a burst of Wall Street financing. After looking hard at multifamily and industrial, he settled with RV parks.

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