Peer into a blue grotto at Radium Springs Gardens

Travelers once flocked to Albany’s Radium Springs, one of Georgia’s seven natural wonders and the state’s largest natural spring. The water’s searing blue hue is a result of trace amounts of radium, which was once believed to have healing powers. Although today there’s no swimming allowed, and only the gardens remain from what was once a grand 1920s casino, the spring’s mysterious allure continues.

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