Behind Chris O'Donnell's Photo Shoot in Ireland

Chris O'Donnell took a break from investigating crimes on NCIS: LA for a cover shoot for CBS Watch! Magazine. ET takes you behind the scenes of his scenic photo shoot, which gave O'Donnell the opportunity to do something he'd never done before.

O'Donnell flew over the Atlantic to Ireland for the photo shoot, which features the NCIS: LA star in some dapper attire.

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County Mayo's historic Ashford Castle and Pat Cohan Bar, where the 1952 John Wayne film The Quiet Man was filmed, were the picturesque locales that provided a backdrop for the shoot.

"The castle's amazing," O'Donnell said of the 350-acre estate. "...There's golf, there's falconry, there's fly-fishing, there's great food, obviously Guinness on tap, which is important. I hit the spa, which was pretty nice. It's been a pretty great stay."

While this is the 42-year-old actor's first cover shoot for CBS Watch!, he experienced another first during the shoot that he will likely never forget.

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As O'Donnell stood on the banks of the Corrib River, he posed for photos with a falcon on his hand, which may have been an unnerving situation for him but produced some spectacular photos.

Watch the video above for a behind-the-scenes look at O'Donnell's photo shoot in Ireland and check out the finished product in CBS Watch! Magazine, which is on newsstands now.

You can catch him tonight on NCIS: LA at 9 p.m. on CBS.