North Breakwater Dome - Credit: Wikimedia Commons
The is a long arched "semi-domical" structure in the port area of Wakkanai, HokkaidÅ, Japan. Rising to a height of above the sea and extending some , with seventy columns, an intercolumniation of , and a width from column to wall of , the form, inspired by a Roman arcade, is said to be without parallel. Read more on Wikipedia
Source: en.wikipedia.org