Romania has many natural wonders including: - Retezat National Park with 90 unique plant species and the best preserved Danube Delta in Europe. - Bucegi Mountains contain the Sphinx and Old Women rock formations sculpted by nature. - The Danube Delta is Europe's largest wetland reserve covering over 2,500 square km and home to over 1200 plant species. - Wear Mouth beach in the Danube Delta is a nesting ground for turtles and a rare unspoiled beach on the Romanian coast.