Mega yachts tend to be several stories tall and for this reason need ways to transport gusts and owners up and down. Some mega yachts have typical staircases but may have handrails encrusted in gold or silver leaf and therefore have a lift nearby. Designers choose to equip their ship with a spiral staircase to save space. Yet still others use a spiral staircase with a glass elevator in the center of the stairs. This creates a cute effect and can be a bit of fun for kids as they chase the elevator up the stairs. One disadvantage of having a surrounding glass elevator is that the elevator mechanisms are