New Mexicans Jeff Bezos and Lauren Sánchez marry in Venice: See the photos from their lavish $50M wedding

The Venice wedding bonanza of Amazon founder Jeff Bezos and Lauren Sánchez Bezos reached its third and final day Saturday after the couple tied the knot a day earlier in front of around 200 celebrity guests in a secluded area of the lagoon city.

Details of the much-anticipated wedding ceremony Friday night were kept tightly secret until Sánchez Bezos posted to Instagram a photo of herself beaming in a white gown as she stood alongside a tuxedo-clad Bezos, the world's fourth-richest man.

Both bride and groom were born in Albuquerque.

Bezos, 61, was born Jeffrey Preston Jorgensen in 1964 to mother Jackie Gise, who was 17 and in high school at the time, according to Journal archives. Gise later married Cuban immigrant Miguel Bezos, a student at the University of New Mexico. Miguel adopted Jeffrey and the family moved to Houston when Jeffrey was a toddler. Jeffrey's biological father is Ted Jorgensen, who died in 2015 and who reportedly did not know about his son until later in his life.

Sánchez Bezos, 55, was born in 1969 to Eleanor Sánchez, a former Los Angeles deputy mayor and Ray Sánchez, an aviation businessman, according to Journal archives. After graduating from Del Norte High, Sánchez moved to Southern California to study and pursue a career in television journalism.

The Bezos-Sánchez-Bezos nuptials brought athletes, celebrities, influencers and business leaders together to revel in extravagance that was as much a testament to the couple's love as to their extraordinary wealth.

A string of water taxis cut through the lagoon to bring Bezos, Sánchez Bezos and their guests to the tiny San Giorgio island, across the lagoon basin from St. Mark's Square, where the couple held their private ceremony. Paparazzi in their own boats followed close behind in a controlled chase, trying to capture the couple and their guests on camera, as police on personal watercraft patrolled a no-go zone.

The celebrations are expected to end later Saturday with a large party in a former medieval shipyard, amid high security.

The wedding has divided Venice, with some activists protesting it as an exploitation of the city by the billionaire Bezos, while ordinary residents suffer from overtourism, high housing costs and the constant threat of climate-induced flooding.