Everyone loves Japan's coveted UNESCO World Heritage sites. They showcase the country's beauty, history and culture.

But according to reviews on one of the Net's most popular traveler-ranking sites, not every tourist is impressed with Japan's most vaunted spots. One visitor blamed Mount Fuji for not looking like the pictures, while another tourist called the Hiroshima A-bomb Dome "a bunch of broken rocks."

Let's explore what some disgruntled travelers have to say about Japan's most impressive World Heritage Sites.