The 61st Floor (第61層,Dai 61-sō?) of Aincrad is a lake-themed floor which was nicknamed as «Insect Land» due to its abundance in bug-type monsters and was the equivalent of hell for the majority of women in Sword Art Online.
Most of the floor is taken up by a huge lake that, in size, is more like a sea, with only a few small isles dotting the landscape. The two largest islands on the floor are the ones where the main city and another where the Labyrinth are located. All of the islands have a mountainous terrain.
The floor was reached and cleared sometime between the April 22, 2024 and the June 24, 2024. Sometime after the floor was reached, Asuna moved into a maisonette within Selmburg.
On October 18, 2024, Asuna brought Kirito to her house in the main city of the floor to cook Kirito's Ragout Rabbit's Meat. 5 days later, they come to this floor again, as Kirito asked to sleep over at Asuna's place, not wanting to separate with her after nearly being killed by and then killing Kuradeel.