A secret Underwater Ballroom, built in the 1800s, tells a story of a doomed Victorian fraudster

A giant statue of Neptune sits atop an underwater dome enclosing a secret room under the lake of [location removed at current owner's request due to recent break-ins] in England.
The entire estate was drenched in opulence and extravagance. It was built in the late 1800s by Whitaker Wright, a shady businessman who was convicted of fraud after many years of floating bad loans and swindling investors. In 1904, he took his own life via cyanide pill on the day of his sentencing.