6Motor Yacht A
Reports claim Russian tycoon Andrey Melnichenko owns the Motor Yacht A, with its unique design.
Top 10 Most Expensive Yachts in the World
Top 5 Subterranean Cities
Originally built for various reasons, from defensive fortifications to storage and religious sanctuaries, many of these underground cities have endured over centuries, preserving fascinating glimpses into past lives and cultures.
