Buckingham Palace

The black iron gates and guards in bearskins are what most people photograph first, but Buckingham Palace itself - that massive Portland stone frontage - is oddly difficult to get a proper look at unless you're standing directly outside. You won't get inside unless there's a specific opening (which happens occasionally in summer, but it's rare and books up months ahead). What you're doing here is paying your respects to the working seat of the monarchy, really. The Changing of the Guard is the main draw, and yes, it's theatrical - all that synchronised marching and drill - but it gets rammed with tourists. If you've got the kids with you, they'll find it mildly entertaining for twenty minutes, then bored. History enthusiasts will get more from touring the Royal Mews or the Queen's Gallery nearby, where you can actually see the art collection and royal carriages. It's free to stand outside and gawp, which is what ninety percent of visitors do. Allow half an hour unless you're catching the Guard change, in which case get there early - 11am on Mondays, Wednesdays, Fridays and Sundays (though it does shift seasonally). If you're staying at Lovat Parks, it's straightforward by tube into central London. Frankly, it's more about the 'I was there' photo than the actual experience. Iconic, yes. Memorable? Only if you time it right or catch a summer opening.