The first thing that strikes you from the outside is how big it is. The first thing that strikes you from the inside is… well, how big it is.
Cologne Cathedral is enormous. That’s part of the reason why it took more than 600 years to build – although, to be fair, there was a break in the middle where nothing was done to it for a couple of centuries.
When Cologne Cathedral was finally finished in 1880, it was the world’s tallest structure (at 157 metres high) until it was overtaken by the USA’s Washington Monument just four years later. Today it is still the largest Gothic church in Northern Europe.