Matt Weatherford (USA):
There is a talk available online that references these mounds
Roger Kennedy
The Political History of North America from 25,000 BC to 12,000 AD
Friday, February 25th 02005
http://video.google.com/videoplay?docid=-3280774057711739155
Courtesy of the Long Now Foundation
http://www.longnow.org/projects/seminars/ Date posted: September 2006 Ian Cade (England):
The site is actually the largest Pre-Colombian city north of Mexico and formerly had a population of around 15,000, the main aspect of the park are the 69 man made mounds, the largest of which is the Monks Mound (pictured) which is around 100ft tall. This is the most impressive part of the site and from the top you get a good over view of most of the site, and you can see central St. Louis. The rest of the site is spread around and basically consists of a lot of grass mounds that vary in size and a ‘woodhenge’ calendar, if I am being honest it was not hugely impressive to see but it was very interesting none the less.
The interpretive centre has some interesting exhibits and a recreation of the houses that would have stood in the city, also there was an extremely good video which gives a great introduction, and talks about how and why the civilisation evolved in this area, it made me think of the things I read about evolution of civilisation in Mesopotamia at the University of Chicago the day before. The reasons for the development of a city here were similar as were the structures which were a little like basic Ziggurats. The interpretive centre is closed on Mon-Tue but the park is open all the time.
This site is just outside St. Louis and I managed to see it on a long day trip down from Chicago. If you are here it is worth going in to St Louis and the road takes you over the Mississippi on or next to the Eads Bridge which is on the US’s prospective list. Also there is the Eero Saarinen’s Gateway Arch, well worth a visit and the Anheuser-Busch Budweiser Brewery, which is nice, shame about the beer though! Date posted: June 2005 Eric Braun (USA):
I went to the Cahokia Mounds pretty much as a last minute visit before heading out of Saint Louis, I just saw the sign and decided to go there. I am glad I did. I had no idea this even existed but am glad I took the time to learn about it. It was a very intresting site, did not take long to go through but was very informative. I am generally not intrested in archeological stuff but even I found it intresting. I recommend taking an hour out of your day as you pass by and visit it. It is worth the look and it's free (although you can spend money in thier gift shop, or through donations if you want)   Kelly (USA):
Cahokia Mounds is located just east of St. Louis, MO. This was the last of the USA world heritage sites that I visited. The natural site was very interesting. Some of the mounds are more than 100 ft. tall. The site contains at least 70 mounds that are between 800 and 1000 years old. The entire site (a large residential city of the Mississippean Native Americans) was almost completely surrounded by a very impressive fortress.
The museum at the mound site is quite good. It has actual artifacts unearthed at the site as well as representations of the city. Several grave sites have been excavated here. One, a high ranking man, was wrapped in a cloak covered with more than 10,000 round shells sewn into the shape of an eagle.
The site is all the more interesting since it presents a fascinating contrast between present day Mississippi river life and that of a millenium ago. (You can see downtown St. Louis and the Gateway Arch from the top of the Monk's Arch)  
Have you been to Cahokia Mounds State Historic Site ? Share your experiences!