Callander (/ˈkæləndər/; Scottish Gaelic: Calasraid) is a small town in the region of Stirling, Scotland, situated on the River Teith. The town is located in the former county of Perthshire and is a popular tourist stop to and from the Highlands.The town serves as the eastern gateway to the Loch Lomond and the Trossachs National Park, the first National Park in Scotland. Due to its location it is often referred to as the "Gateway to the Highlands". The former St.