The most outrageous splurges of tech billionaires, from Richard Branson's private island to Jeff Bezos' $65 million private jet

Elon Musk's Gulfstream G650ER made headlines after Tesla paid $700,000 to help cover the cost of the 150,000 miles logged last year.

One of Elon Musk's residences — a $17 million Bel Air estate — includes a two-story library and a 1,000-bottle wine cellar. Other tech billionaires are also known for their impressive housing collections, including Michael Dell's "Castle" in Texas and Bill Gates's Xanadu 2.0 in Medina, Washington.

Elon Musk spent close to $100,000 at a London auction to purchase the 1976 Lotus Esprit. The submarine car appeared in the 1977 James Bond movie "The Spy Who Loved Me." In addition to this purchase, Musk also owns a Ford Model T and other vehicles.

Oracle founder Larry Ellison owns both a decommissioned Soviet MiG-29 and an Italian air force SIAI-Marchetti S.211.

Larry Ellison's current yacht is named Musashi, and is 288 feet long. He previously owned a much larger, 454-foot yacht named Rising Sun. Ellison reportedly sold the vessel for $300 million.

Larry Ellison paid "an estimated $600 million for 98% of Lana'i." Additional properties of Ellison's include luxury residences in Japan and Silicon Valley.

Unlike Jeff Bezos' jet, which only seats eight, Bill Gates' $40 million plane reportedly seats 19 passengers.

Bill Gates' sports car collection, worth an estimated $650,000, includes a Jaguar XJ6 and a Ferrari 348. It also includes several Porsches — a Porsche 911, a Porsche Carrera Cabriolet 964, and a 1988 Porsche 959 Coupe.

The Microsoft CEO purchased the property in 2013 along with "several unnamed buyers."

Purchased by Michael Dell and Walmart billionaire Rob Walton in 2006, the resort ranked No. 1 on US News & World Report's annual list of top hotels in the United States this year. The resort boasts seven swimming pools, luxury oceanfront villas that rent for $18,000 a night, and an impressive art collection. Dell also owns a Four Seasons penthouse in Boston in addition to his Austin home, known as "The Castle."

Through his holding company MSD, Dell purchased an archive of 185,000 rare and vintage photos. The purchase remains "one of the largest photography transactions in history." He has since loaned the photos to the University of Texas at Austin.

Both historic items are kept in Gates' Washington mansion, which is known as Xanadu 2.0. Gates purchased the Homer painting back in 1988, and bought the da Vinci manuscript six years later. Dating back to the 16th century, the valuable artifact is kept in his mansion's 2,100-square-foot library.

Purchased for just $180,000, the British Virgin Island location's worth was estimated to be $60 million in 2006. Branson has also indulged in several expensive island toys — including a catamaran called the Necker Belle and a mini-submarine called the Necker Nymph — which he rents to guests staying at the resort. For this reason, Branson's indulgences are more often considered investments.

In 2013, the Amazon founder spent three weeks aboard a submarine. The excursion successfully collected the booster rockets from the Apollo 11 mission.

The Old Palo Alto home was built for artist Pedro de Lemos. Construction took place over a decade from 1931 to 1941. Page also owns the surrounding properties, contributing to an impressive estate.

Superyachts are a popular indulgence for billionaires, and both Google cofounders splurged for their own vessel. Brin owns an $80 million yacht called Dragonfly, which was used for the pair's Fiji vacation in 2012. Page, meanwhile, owns a six-deck vessel that comes with five waverunners.

The cofounders purchased a Boeing 767-200 that seats 50 people in 2005. Additionally, Google started construction on a private airport in 2014 for an estimated $82 million.

Advanced trapeze lessons at New York City's Circus Warehouse — where Brin has been spotted — cost $1,760 per month.

Alongside Gates, Zuckerberg has been seen driving practical vehicles such as a Honda Fit and Volkswagen GTI — both of which cost around $30,000. However, there is one luxury vehicle amongst these affordable cars: an Italian Pagani Huayra sports car, worth about $1.3 million.

Zuckerberg bought a plantation and white-sand beach in 2014. Both properties, the Kahua'aina Plantation and Pila'a Beach, are located on the Hawaiian island of Kauai. The two make up a combined 750 acres of island property that includes both farmland and beaches.

After selling his first company Red Swoosh, Kalanick took a year off in 2007 for a trip around the world, with destinations including Japan, Iceland, and Senegal. After leaving Uber amid scandals in 2017, Kalanick sailed around Tahiti in a $70 million sailing vessel.

Like other tech billionaires before him, Neumann has amassed plenty of properties. These real estate purchases include a San Francisco home with a guitar-shaped room, a 60-acre farm estate in upstate New York, a Hamptons mansion, and a $10.5 million Greenwich Village townhouse.