Helena, Montana 1869, October 1871, August 1872 and January 1874 that swept through the early mining camp. On August 2, 2016 an arson attack severely damaged the "tower" and was deemed structurally unstable. The tower is to be "demolished"; however, it is to be ""rebuilt" using the same methods that were used in its original construction. In 1889, railroad magnate Charles Arthur Broadwater opened his Hotel Broadwater and Natatorium west of Helena. The Natatorium was home to the world's first indoor swimming pool. Damaged in the earthquake of 1935, it was closed in 1941. The many buildings on the property were demolished
Indoor water park in the world. Most major indoor water parks have: Indoor water park An indoor water park is a type of water park that is located inside a building. An indoor water park has the ability to stay open year-round, as it is not affected by weather conditions.. The first indoor water park was built in Edmonton, Alberta, Canada in 1985 at the West Edmonton Mall. It is called the World Waterpark and is over . It was a success for the mall. The first indoor water park in Europe was built in Blackpool in 1986. It is called the Sandcastle