|Buckingham Palace & Statue of Eros|
Britain is full of lovely stately homes, many of which are open to the public. Even the Queen's main residence, Buckingham Palace is open to visitors https://www.royal.uk/royal-residences-buckingham-palace
Not only London, but there's Blenheim Palace, home to Winston Churchill, http://www.blenheimpalace.com/
Most stately homes are full of antiques and have beautiful gardens to walk around, a great way to spend a day.
|Kiplin Hall, North Yorkshire|
A great family day out, gardens including a renovated Victorian walled garden, a play area for children and a nice tearoom usually equals a good visitor experience.
|Kiplin Hall library|
It was originally built by George Calvert who went on to be Governor of Maryland, USA. Full of art and period furniture Kiplin Hall certainly has an atmosphere and it really feels like you go back to another time when you step through the doors.
I can't think of anywhere else in that world that has as many stately homes as Great Britain, can you?