The reactions of nitrous acid with 1Â°- and 2Â°- aliphatic amines may be explained by considering their behavior with the nitrosonium cation, NO(+) , an electrophilic species present in acidic nitrous acid solutions.
Main article: Indoor water park. The first-ever indoor water park was built in Edmonton, Alberta, Canada, in 1985 at the West Edmonton Mall as part of the $1.2-billion-dollar Phase III expansion. World Waterpark is still the world's largest indoor water park, at over 817,800 sq ft (75,980 m 2) in size.
Photos: 20 best water parks in the world. 20. Located inside the West Edmonton Mall in Alberta, the indoor water park covers five acres. The Canadian park features an Aqualoop looping slide, the Thunderbolt sled slide, simulated surfing, and a zipline. Located inside the West Edmonton Mall in Alberta, the indoor water park covers five acres.