I visited the ruins at Takht-e-Bai in 1968 when I was 21 years old and in the USAFSS stationed in Peshawar Pakistan (the same base Gary Powers departed on his ill-fated U-2 flight over Russia in 1960). Takht-e-Bai is one of my fondest memories and and unforgettable experience. Would love to visit it again, but times are not so friendly there now.