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Before you go
Your trip to Collinsville.
Illustrative images. The pictures in this guide are illustrations based on the real place, not photographs, and may differ from it.
Collinsville – Illinois Destination St. Louis and Cahokia
How to get there
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St. Louis Lambert International Airport (STL) 44 km
Approximate distances. Check flights and bus, train or boat schedules before you travel.
St. Louis is about 20 km away, crossing the river via interstates I-55/70. St. Louis Lambert International Airport (STL) is about 44 km.
How many days
Half a day to a day, with Cahokia Mounds and the Gateway Arch viewpoint on the return route.
When to go
In spring and fall, with pleasant temperatures for walking among the mounds. In summer it’s hot and there is little shade.
The seasons shown are the most usual ones; nature doesn't always follow the calendar.
Do you need a car?
Yes: public transport to Cahokia Mounds is limited, and a car is the most practical option.
Suggested itinerary
An order that works
Built with the places on this page. No rush: it's paced so you have time to see them.
One day in Collinsville
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Morning
Cahokia Mounds
Visit the interpretive center and climb Monks Mound, the largest earthen mound at Cahokia.
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Afternoon
View of the Gateway Arch
On the way back to St. Louis, stop at the riverside park in East St. Louis to see the Gateway Arch and the city across the river.
Check before you go. Opening hours and days change, and places may close for renovations, holidays or events. This itinerary is a suggestion from Cidade Turismo, not a commitment: plan yours by checking directly with each place you intend to visit.
Before you go
Frequently asked questions
What is there to see in Collinsville?
The Cahokia Mounds historic site, a UNESCO World Heritage Site, with the earthen mounds of the largest pre-Columbian city north of Mexico.
How do you get from St. Louis to Cahokia Mounds?
By car, in about 20 minutes, crossing the Mississippi River on I-55/70.
Is Collinsville in the same state as St. Louis?
No. Collinsville is in Illinois, on the other side of the Mississippi River; St. Louis is in Missouri.
What time zone is Collinsville in?
UTC−6 in standard time (Central Time) and UTC−5 from March to November during daylight saving time.