A sense of scale

You know the Hoover Dam is big before you see it, but once you're there, you start to get a sense of just how large the whole construction is. 

Here's a view of the bottom of the new bridge from the dam.

As always, click on the image to see a larger version.

If you look very closely at the structures on the right and left, you can see trucks that give you a sense of how enormous even the outlying structures are.

Now, here's a view of the dam from the top center of that bridge.

Yeah, we're talking really big. 

Small parts of the inside of the dam are huge.  Check out this one section of turbines. 

I didn't expect to have a great time at the dam, but I ended up finding the entire experience not only informative but oddly compelling.  I definitely recommend a visit to it.