Built for a millionaire map-maker in the 1880s, this historic Californian mansion remained a mystery to the public for a century. The secretive McNally Estate is packed with history—from its exotic gardens to the ornate Turkish Room inspired by the 1893 World’s Fair. Take the tour and discover how this architectural marvel with its fairytale turret and original 19th-century details was lovingly restored and eventually sold for $3 million (£2.3m).

Click or scroll on to step back in time and tour this fascinating Victorian estate...