Clackmannan Tower, prominently situated on a hilltop in Clackmannan on the High Street, dates to the 1300s and was built by Sir Robert Bruce, a descendant of King Robert the Bruce. This imposing keep features high-quality stonework and repeated vaulting, its distinctive architecture suggesting it was always intended as a prestigious landmark visible for miles around. The tower carries literary significance, having been visited by poet Robert Burns, and may occupy the site of a previous royal residence dating to around AD 1000. Though once surrounded by additional structures that have since disappeared, the tower stands as an important piece of Scotland's medieval heritage with its royal connections and architectural distinction.