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
Indiana University Natatorium in July 2009, IUPUI hosted one of USA Swimming's most elite competitions, the 2009 ConocoPhillips National Championships. As part of the agreement for being selected to host the 2016 USA Diving Olympic Trials, the Natatorium underwent roughly $18 million in renovation and repairs before 2016. The project will include a new roof and improved climate control. According to local television station WTHR, "the venue cost $21 million to build in 1982, and would cost nearly $75 million to replace." 50 m Freestyle 22.18 Peter Williams (South Africa); April 10, 1988 100 m Backstroke 53.17 Aaron Peirsol (USA); April 2, 2005