As a part of Europe tour, I had the opportunity to visit this historic monument at Cologne, Germany.
Cologne Cathedral also known as St.Peter’s Cathedral, has two spheres (515 ft in height). It took 600 years to complete it in 1880. It survived two major world wars.
It is declared as a world heritage site made of gothic architecture. It was completed in the 18th Century after more than 600 years of starting the construction. It is designed in the form of a cross with two huge towers at the entrance. Inside the cathedral the ceiling is at a great height with decorative glass surrounding it.
The completion of Germany's largest cathedral was celebrated as a national event on 14 August 1880, 632 years after construction had begun which was attended by Emperor Wilhelm I. The cathedral suffered fourteen hits by aerial bombs during World War II. Badly damaged, it nevertheless remained standing in an otherwise completely flattened city. It is still under repairs to some of the damage that was done and wear and tear. (source:https://en.wikipedia.org/wiki/Cologne_Cathedral)
It has a spiral staircase for visitors to climb and take a bird's eye view of the beautiful surroundings. One of the masterpieces of architecture, it is the most visited monument in Germany.