Tokyo's newest and biggest visitor attraction, the 634-meter-high Tokyo Sky Tree in Sumida Ward, will open to the public on May 22. And if 11th-hour contract negotiations bear fruit, visitors to the Sky Tree may soon have the opportunity to plummet 430 meters (over 1,400 feet) toward terra firma, in what is claimed to be the world's highest commercial bungee jump.

The new service, it was learned, has been quietly undergoing safety tests late at night. If arrangements can be finalized within this month, the first customers may be able to take death-defying dives from the Sky Tree from around mid-June.

The jump was discovered after being inadvertently photographed by The Japan Times' sharp-eyed senior cameraman, Yoshiaki Miura, who was in the neighborhood shooting night exposures of the new tower.