I hope this is OK to post in here but is it a good or a crazy idea to take a 2yo and a 4yo on a day trip to London? I'm thinking a walk past Buckingham Palace, a trip in an open top bus and maybe a look around the natural history museum. I live miles away but we're visiting relatives in the home counties just after Easter and I thought it might be a good opportunity to show them the capital. We're travelling past the west side of London, I know it's not a great idea to drive into Central London so where would we be best to ditch the car and catch a train in? Any advice much appreciated! Real country bumpkin here!