Ulupo Heiau State Historic Site
Find this spot—where signs near a heiau (shrine) also explain Kailua's early history—tucked next to the Windward YMCA. Although they may look like piles of rocks to the uninitiated, heiau are sacred stone platforms for the worship of the gods and date from ancient times; this one is 140 feet by 80 feet. Ulupo means "night inspiration," referring to the legendary Menehune, a mythical race of diminutive people who are said to have built the heiau under the cloak of darkness.