We went to the Natural Museum too :
Some photos of the city ( very clean compare to NYC , Philly or Baltimore )
The Washington Monument , an obelisk of 555ft/169m
...And a river went out of Eden to water the garden; and from thence it was parted, and became into four heads. The name of the first [is] Pison: that [is] it which compasseth the whole land of Havilah, where there is gold; And the gold of that land is good: there you may also find bdellium and the onyx stone.