Falak-ol-Aflak Castle or Shapour Khast Gate belongs to Sasanid Era and it is located at the center of Khorram Abad, on a hill overlooking Khorram Abad.
Gerdab-e Sangi is a historical stony whirlpool that belongs to Sasanid Era and it is located at the center of Khorram Abad, in the middle of the ancient texture of the city, next to Takhti Square.
Lorestan province is a province of western Iran in the Zagros Mountains. The climate is generally sub-humid continental with winter precipitation, a lot of which falls as snow.