View of the Krummturm, Solothurn

Krummturm Solothurn
The Krummturm is a medieval defensive tower in the city of Solothurn. The exact start of construction is not known, but the tower was completed in 1462/63. Although the name suggests a crooked building, this is not correct. Only the roof appears crooked from most sides. The strange roof shape is the result of the irregular pentagon of the tower's floor plan. On the lowest floor there is a 10-meter-deep dungeon in which criminals were once imprisoned. If historical walls could speak, they would have a lot to tell. This includes the Krummturm legend - a tragic love story between the carpenter and the builder's daughter.
Text / Source: Solothurn Tourism / Krummturm Solothurn, Krummturmstrasse 4, Solothurn
solothurn-city.ch/ausflugsziele/attraktionen/krummturm-b7bf1f648d

No, the tower is actually not crooked or crooked. The fact that the roof is slightly inclined is because the tower is an irregular pentagon and some architects must have had something in mind. :)