Welcome from Siem Reap Tour Trails. Our company name was created with combination of about and Siem Reap to describe everything about Siem Reap province. Siem Reap, Cambodia, "land of the wold's splendor!" Named #2 in the world's Best Destination! Siem Reap is the capital city in the northwestern Cambodia, and a popular resort town as the gateway to Angkor region.