9. Tower of Hercules – Spain
The Tower of Hercules is yet another wonder of the world that is an ancient lighthouse in Spain. This structure is similar to the lighthouse of Alexandria in Egypt which is believed to be almost 2000 years old. Many of you may wonder what makes this tower feature in the list of the wonders of the world, but you surely need to visit the place in person to experience its serene beauty. One of the oldest Roman lighthouses still in use, the Tower of Hercules is a National Monument of Spain and UNESCO world heritage site.