Orglace Mansion

Orglace Mansion (Hedgehog Mansion in the Our Precious Memories ending), is a mansion that was initially given to the Orglace family by Kintobor Science Corporation to support Marilyssa Orglace's secluded research, as well as part of the package for their island resort getaway.

In Sonic's Hourglass, it serves as the main location of interest for the entire story. In Sonic's time, it has become run-down and dilapidated by millenniums of neglect.

Front Yard
The Front Yard is an overgrown lawn with dark green grass, a fountain, and a stone walkway. It is said that there are plants growing there that cannot survive in Green Hill Zone's climate.

Trivia

 * Orglace Mansion is the Sonic's Hourglass parallel to Aduraice Mansion from (MARIO) The Music Box.