This is a mosque and a tomb which according to the Shiite beliefs is the resting place of Ahmed b. Musa Kazem, the eldest son of Musa Kazem and also Muhammad b. Musa (the latter was traveling to Khorasan to join his brother when he was killed by the people of Ma’mun, the Abbassid Calipha). The tombstone on the outside of this place is covered with glass tiles that reflects the light in all directions. This 14th-century shrine has been rebuilt over and over again for reasons such as earthquake and structural damage, but none of these interventions will affect the sensation that you get when you arrive.

Read more in Tripatini member Rashel Jones' post The Top 10 Historical Sites to Visit in Iran.