Inside the $45 Million Long Island Estate That Was Turned Into a Cult Compound

Inside The French Palace Where 2,000 Nobles Lived to Be Near One Man: Versailles

Harry and Meghan Are Back In Britain. These Are the Royal Homes They Cannot Have

Inside the California Estate the Folger Coffee Heiress Left Behind Before Her Murder

The Royal Wedding Gift Mansion That Became a Place of Mourning: Claremont

The Demolished Rothschild Mansion The Nazis Took Over: Palais Albert Rothschild

The English Mansion That Housed an Exiled King: Bramshill

Inside The Demolished Mansion Sarah Ferguson Fled To After the 1992 Scandal: Romenda Lodge

The Royal Station That Carried Prince Albert Victor While Britain Mourned: Wolferton Royal Station

Inside The 200-Room Gilded Age Resort That Failed Twice and Rotted for 44 Years: Halcyon Hall

Inside The Country Estate Where Sarah Ferguson Was Left Behind By Her Mother: Dummer Down

Inside The Royal Manor William of Gloucester Left Behind: Barnwell Manor

Inside The Mansion Mary of Teck Took Over and Left Its Owners With Three Rooms: Badminton House

Idle Hour, the 110-Room Vanderbilt Mansion a Bankrupt College Couldn't Save

The Hudson River Castle That Blew Apart From the Weapons Stored Inside

Inside The $65 Million Gilded Age Mansion Nobody in New York Will Buy 25 Riverside Drive

The Gilded Age Mansion Erased From Newport’s Most Famous Avenue: Stone Villa

The Doomed Castle Queen Victoria Loved... Saved By a Scottish Village: Braemar Castle

Inside The Scottish Castle That Lost a $65 Million Painting in Broad Daylight: Drumlanrig Castle

Inside The Burned Down Mansion the National Trust Refuses to Fully Rebuild: Clandon Park

The "Ugliest" Royal House That Shaped Three Kings: York Cottage

Inside The Demolished Marble Palace The Mountbatten Family Tore Down: Brook House

Touring Queen Elizabeth II Malta Home That Needs $10 Million to Survive: Villa Guardamangia

Inside The Rothschild Chateau Left To Rot 5 Miles From Paris: Château Rothschild

Inside Princess Diana's Abandoned Childhood Home: Park House

The Rockefeller Mansion the Family Dynamited Themselves: The Eyrie

Inside The Rockefeller Heiress's Italian Palazzo That Vandals Reduced to a Ruin: Villa Turicum

The Second-Largest House in America, Dumped Into the Hudson River: Rockwood Hall

Inside The Cursed British Palace With A Private Zoo The Owner Abandoned: Haggerston Castle

Inside The English Mansion Britain's Richest Son Built and Lord Byron Envied: Fonthill Abbey

Inside The Country Estate Winston Churchill Chose For His Secret Army (Before It Burned Down

Inside The Demolished $25 Billion Dollar Gilded Age Palace Buried Under a California Suburb

Touring The Demolished Scottish Private Island Fortress in the Hudson River: Bannerman Castle

Inside The Highland Castle Built on the Ruins of 15,000 Homes: Dunrobin

Inside The Rothschild Mansion Where "Wild Circus" Parties Were Thrown By The Family Bachelor

The Secret £850K Cottage Queen Camilla Bought During The Affair: Ray Mill House

Inside Queen Victoria’s Most Private Royal Home: Osborne House

The Royal Wedding Gift the Army Was Ordered To Destroy: Delnadamph Lodge

The Controversial Mansion Behind the Queen Mother's Favorite Jewels: Polesden Lacey

The First Home the Queen Mother Couldn't Wait To Escape: White Lodge, Richmond

The Queen Mother's Ancestral Castle the British Army Blew Up for Demolition Practice: Streatlam

Inside the British Mansion a Duke Was Forced to Auction Down to the Carpets: Stowe House

Inside the Underground City a British Duke Built So He'd Never Have to Be Seen: Welbeck Abbey

Inside The Newport Mansion that Ended Gilded Age of Manners: Crossways

Inside The Paris Apartment Where The Most Beautiful Woman In Europe Lived In Total Darkness

Inside The "Fake" Palace The Richest Woman In The World Built (Then Never Lived In It): Sumiya

The British Mansion Where The Last Empress Of France Outlived Her Husband and Son: Farnborough Hill

Inside The "Forgotten Vanderbilt Mansion" That Was Torn Down While The Owner Was Still Living In It

Inside The Country Palace The Dukes of Newcastle Demolished In 1938 Leaving Only The Chapel Standing

Inside The Palace Britain's Richest Family Walked Away From (Then Tore It Down): Trentham Hall

Inside The Royal Scottish House Queen Victoria's Son Hated (But The Queen Mother's Greatest Love)

The Rothschild Mansion The British Government Refused To Save... Then Watched Sell For Pennies

The Royal Cottage Queen Elizabeth Had To Give Harry and Meghan (Then Charles Took Back)

Inside The Demolished Royal Mansion Queen Elizabeth Gave Prince Andrew: Sunninghill Park

The Castle the Queen Mother Bought After the King Died... and the Life She Built There Alone

Inside Britain’s Richest Demolished House The Grosvenor Family Erased

The Royal House Princess Anne Used To Escape the Palace Machine

The Queen Mother's Childhood Home Had a Monster Hidden Behind the Walls: Glamis Castle

Clarendon Court: The Newport Mansion Where Sunny von Bülow Was Found Comatose and Never Woke Up

Inside The Palace Where Princess Diana Recorded Secret Tapes and Planned Her Revenge on the Royals