After tying the knot in an intimate, luxurious weeklong extravaganza at the Borgo Egnaza resort in southern Italy, newlyweds Justin Timberlake and Jessica Biel were ready to go wild -- really wild!

Newly released photos from Oct. 21 (two days after the wedding) reveal Timberlake, 31, and wife Biel, 30, arriving via private plane in Tanzania, on the southeastern coast of Africa. That same day, the boarded a helicopter from Kilimanjaro Airport to Singita Grumeti, a private reserve in Serengeti Park. There, the couple reportedly checked out the world famous wildlife via 4 x 4s, took a hot air balloon ride and kicked back in a luxurious lodge.

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For her part, Biel has already adventured in Tanzania: Back in January 2010, the Total Recall actress reached the 19,341 peak of Mount Kilimanjaro -- the world's tallest mountain! -- following a grueling week-long climb. Joined by fellow actors Emile Hirsch and Isabel Lucas, musicians Santigold and Lupe Fiasco and others, Biel joined the all-star expedition to help raise money and awarenes of the global clean water crisis. PHOTOS: Justin and Jessica through the years

Singer-actor Timberlake opened up about the wedding itself to Britain's Hello! magazine -- and confirmed that he serenaded his bride with a brand-new, original song as she walked down the aisle in a custom, pink Giambattista Valli gown.

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"I figured if there was something I was going to be able to offer, it would be to sing her down the aisle," the "Cry Me a River" crooner said. And he brought down the house!

"Grown men were weeping. Hopefully it's because I didn't sound bad," he said.

This article originally appeared on PICTURES: Justin Timberlake, Jessica Biel Honeymoon in Tanzania