See the high-risk trips wealthy travelers are booking, from Everest trips to $750,000 expeditions to the deepest point in the ocean

Many people were awed by the $250,000 price tag for tickets for the now-missing submersible headed to the Titanic. It's sparked a conversation about some of the wealthy's high-risk travel habits.Furtenbach Adventures.

• A submersible with five people headed to the Titanic wreckage has been missing since Sunday.
• Passengers reportedly paid $250,000 each.

A submersible carrying five passengers to see the wreckage of the Titanic has been missing since Sunday.

The tourist expedition has sparked conversation for, among other things, its hefty price tag: $250,000 a person, according to The New York Times.

Its high price point makes it an activity typically reserved for the wealthy. Among the five passengers onboard the missing watercraft are British billionaire Hamish Harding and Pakistani-born multimillionaire Shahzada Dawood.

Here are some potentially dangerous trips that wealthy adventure-seekers take: