World’s Rich Are Rattled and Seeking Old-Fashioned Security

  • Safe-deposit boxes are back in vogue as recession fears mount
  • Some firms say negative interest rates are helping fuel demand

Tunnel leading to a storage facility in Amsteg, Switzerland

Photographer: Michele Limina/Bloomberg

A few blocks from Grosvenor Square in Mayfair, 46 Park Lane resembles a private club with wood-paneled walls and an ornate fireplace dating back to Britain’s Victorian era.

But down a flight of stairs is one of the most secure rooms in London. Built by IBV International Vaults, the steel-walled stronghold is scheduled to open next month and will cater to billionaires looking for a place to stash their most prized possessions.