"I think, quite frankly, an active mind is as important as an active body," the former "Wyatt Earp" TV star said recently of the unusual honeymoon destination.
"Fortunately, my lady's a teacher and she puts up with me," he added with a chuckle.
O'Brian and 54-year-old Virginia Barber wed in June at the Forest Lawn Memorial Park cemetery in what they quipped was a "wedding to die for."
It was the second marriage for Barber and the first for O'Brian, who is likely best known to baby boomers as the iconic lawman in the 1950s TV series "The Life and Legend of Wyatt Earp." The couple dated for 18 years.
O'Brian appeared on dozens of TV shows over the years including "The Love Boat," "Murder, She Wrote," "Fantasy Island," "L.A. Law," "Charlie's Angels," "Police Story," "Perry Mason" and "General Electric Theater."
In recent years, he has dedicated time to his Hugh O'Brian Youth Leadership organization, which encourages and helps train high school students to become future leaders.