Tech Insider

A tourbillon (French for "whirlwind") is a centuries-old mechanism built inside some of the world's most expensive watches. It was originally designed to improve the accuracy of pocket watches by rotating the escapement and balance wheel to help counter the effects of gravity.

Tech Insider : Travel
Spriha Srivastava in Davos
Spriha Srivastava is Business Insider's UK bureau chief.
Tech Insider : Travel, Travel
A photo of the Vienna city skyline.
This European city was ranked as the top place for ex-pats to move to. Do you recognize this skyline?
Tech Insider : Economy, Economy
Singapore
Singapore, which is pictured above, and Zurich ranked as the most expensive among 173 cities analyzed.