Exotic locales with exotic looking residents is a sure-fire concept in fiction. Two of our heroes learned that grand things come in small packages.
Princess Laethwen's people arrived in the Brazillian rainforest of Earth-One long ago, and found that this world had a race of giant humanoids. One such individual, size-changing hero the Atom aka Ray Palmer, arrived in her city of Morlaidn and liberate her people from the princess' tyranical father. Although they married they would eventually part and her people lost forevermore through tragedy.
Johnny Peril was traveling to a different continent, the Africa of Earth-Two, to track down the legend of a minature planet floating above the jungle. Aiding Princess Shera, Peril also liberated her land from evil hordes controlling it, then returned to normal size and his unusual life. In each case, our heroes lived the sword wielding lives of heroes from classic literature, met gorgeous princesses, and lived to tell the tale another day.