- The Tower of London’s Dark Secrets: Executions, Crown Jewels & Royal Betrayal
- Inside Buckingham Palace: Secrets, State Rooms & How to Visit the King’s London Residence
- The Castle Built Into a Cliff — The True Story of Predjama Castle
- This Swiss Castle Looks Like It’s Floating on Water — And Its Dark Past Will Surprise You
- You Haven’t Truly Seen Japan Until You Visit This Samurai Castle in Osaka
