Toghrol Tower is a 12th-century monument, located in the city of Rey, Tehran province, Iran. Tuğrul Tower is near Rashkan Castle. The 20-metre-tall (66 ft) brick tower is the tomb of Seljuk ruler Tughril I, who died in Rey in 1063. Originally, like other monuments of its time, it was capped by a conical dome (گنبد, gonbad), which collapsed during an earthquake.