Cat Tree King, part of Collina Concepts BVBA, is a market leader in high quality cat trees and cat trees for large cats in Europe. They offer a permanent stock of over 50,000 cat trees and focus on providing excellent customer service. Their headquarters are located in Antwerp, Belgium, and they have warehouses in the Netherlands and other European countries. They have received overwhelmingly positive reviews on Amazon and have a significant following on social media.