United Kingdom, March 17 -- King Charles has been praised for his "modern vision" for royal buildings.

The 76-year-old monarch is set to open the doors of St. James Palace for guided tours for the first time, and his former butler Grant Harrold - who worked at Highgrove for the then-Prince of Wales between 2004 and 2011 - thinks it will be a "great experience" for tourists because there are so many "interesting" things to see there.

Speaking on behalf of JeffBet, Grant said: "For any royal enthusiasts, it's a very exciting prospect, and equally of the East Wing at Buckingham Palace, and Balmoral last year, the fact they've opened both of these is also a big thing...

"It's got one of the oldest surviving Tudor fireplaces which has got A...