Zein al-Din is one of the especial historical caravanserais you can visit in your Iran trip. The caravanserai which is 400 years old and was constructed under the order of Shah Abbas the Great is located on the way between Yazd and Kerman. The especial thing about the caravanserai is its circular plan which makes it the only caravanserai in Iran with this form. The building which was constructed in 2 storeys has been renovated and used as a hostel nowadays. Spending a night of your Iran tour in this caravanserai and feeling the tranquility of desert nights will be a great experience in your Iran Travel.