I’ve been to London’s Natural History Museum twice and I’ve got to admit… there’s a bit of a fault in their layout.
See, dinosaurs are awesome, so of course everyone wants to see the dinosaurs.

It’s a very popular exhibit. You go up to a walkway, which is about 2 people wide and the length of the room. This takes you to the T-Rex, which everyone wants to see. If you go at the right time (by which I mean, the wrong time) that walkway will be super crowded and you’ll move about an inch a minute.
By the time Kristen and I had gone past the T-Rex and to the lower exhibit we were sick of crowds and ready to go. So we left.
NOTE: It looks like they’ve since started a queue for it, which might actually solve the problem.
There are other interesting areas – the Red Zone entrance is pretty cool:

Some of the exhibits seem a bit more geared towards younger kids. Also, there were school groups at the museum that day and they may or may not have been running around and hogging some of the interactive exhibits.
So Kristen and I decided to go to the Science Museum instead. I’ll admit that this was Kristen’s idea, but I’m glad she thought of going there. That place was really cool – especially if you’re a big nerd like I am.
They had exhibits on physics and maths and space. I’m a big maths nerd (I know you all thought I was cool, but that’s the truth). I really liked the DNA area that they had, which was super interesting.
We spent a lot of time in the Science Museum.

So yeah, if you’re a nerd or like nerdy things, check it out.
And afterwards go for cupcakes at Hummingbird Bakery. Nom nom nom.