Your mom!

But seriously, a pyramid at Giza. Pretty warm in there after 3500 years in the sun.

The Cologne Cathedral.

It took 500 years to build it.

That is so many generations. Imagine you are just the 4. architect. Your great grandfather has started it, but you did not know this man. Somehow the plans have been passed down to you, but of course there were changes… Somebody after you is going to finish it. You do not know how it’s going to look in the end, because there will be more changes later. If they will be able to finish it at all…

I got to climb into a particle accelerator to look at the acceleration coils. Pretty cool.