Major sights are:

Tehran: National Museum, Golestan Palace complex, Jewel Museum, Reza Abbasi Museum, Carpet Museum, Saadabad Palace Complex, Glas & Ceramics Museum

Isfahan: Imam Square with sights, Chehel Sotun Palace, Bazaar, Friday Mosque, Old Bridges, Vank Cathedral, Hasht Behesht Pavillon

Shiraz: Eram and Naranjestan Gardens, Hafez and Saadi Tombs, Shah Cheragh Sanctuary, Vakil Bazaar, Arg fortress, Qoran Gate

Persepolis: Naqsh-e Rostam and Pasargadae,

Yazd: Friday Mosque, Takiyeh Chaqmaq, Dowlatabad Garden, Towers of Silence, New Firetemple, Bazaar

Kerman: Gandj Ali Khan Complex in Bazaar with Teahouse, Hammam Museum, Friday Mosque, Malek Mosque, Djabaliyeh Building, Gonbad-e Moshtaqieh Sufi Mosque, Mahan Sufi Mosque and Shahzadeh Garden

Hamadan: Alavian Mausoleum, Esther Tomb, Avicenna Tomb, Ganj Nameh, Kangavar temple

Kermanshah: Takiyeh Moaven ol-Molk, Bazaar, Taq-e Bustan, Bisotun

Susa: Choga Zanbil, Shushtar dams

Qom: Fatema al-Masoume sanctuary, Feiziyeh Theological Seminary

Mashhad: Imam Reza sanctuary

Soltaniyeh: Dome

Takht-e Soleiman: Firetemple

Qareh: Kelisa Armenian Church

Kashan: Agha Bozorg Mosque, Borujerdi House, Tepe Sialk, Fin Garden

Damghan: Tarikhane Mosque, Tepe Hissar

Gonbade Qabus: Tomb Tower

Neishapur and Tus sights: Forumad Seljuk Mosque

Villages of Abyaneh: Masoule, Kandavan and Kandelous

Natural sights: Great Salt Lake, Dasht-e Kavir and Lut deserts, Alburz mountains with Damavand and AlamKuh, Zagros mountains with Bakhtiari trails, Sabalan mountains, Orumiye Lake, Caspian Sea with port of Bandar-e Anzali, Golestan and KhoshYelagh National Parks, Persian Golf seashore south of Bushehr, Kalat area north of Mashhad

Qeshm Island

Many thanks for your support and pictures to Peter Kerber