Isfahan was for nearly 200 years the capital of Persia. It's the third largest city in Iran after Tehran and Mashhad and still has more to see than both of them combined. This is probably what its historical epithet of "Half of the world" (Nesf-e Jahān) alludes to. The central historical area is called Seeosepol after the name of a famous bridge.
Aqa bozorq mosque
Kashan is the first of the large oases along the Qom-Kerman road which runs along the edge of the central deserts of Iran. Its charm is thus mainly due to the contrast between the parched immensities of the deserts and the greenery of the well-tended oasis. Archaeological discoveries in the Sialk Hillocks which lie 2.5 miles (4km) west of Kashan reveal that this region was one of the primary centres of civilization in pre-historic ages. The Sialk ziggurat still stands today in the suburbs of Kashan after 7000 years.
Old part of Na'in
Na'in (also known as Naein and Naeen) lies 170km north of Yazd and 140km east of Isfahan at an altitude of 1545m above sea level. Like much of the Iranian plateau, it has a desert climate, with a maximum temperature of 41°C in summer, and a minimum of -9°C in winter. More than 3,000 years ago the Persians learned how to construct aqueducts underground (qanat in Persian کاریز, or kariz) to bring water from the mountains to the plains and Na’in is one of the best places in all the world to see these qanats functioning. Unique to Na’in are some of the most outstanding monuments in all of Iran: the Jame Mosque, one of the first four mosques built in Iran after the Arab invasion; the Pre-Islamic Narej Fortress; a Pirnia traditional house; the Old Bazaar; Rigareh, a qanat-based watermill; and a Zurkhaneh (a place for traditional sport). Besides its magnificent monuments, Na’in is also famous for high-quality carpets and wool textiles.
Varzaneh located 105km southeast of Isfahan and 240km away from Yazd, Varzaneh was the last civilization on the Zayanderud river since 5000 years ago. Varzaneh is famous regionally and all over the world for its spectacular desert, which ranked as one of the most accessible deserts of Iran. Unique to Varzaneh, are local women's costumes, being completely white chadors, while women in the rest of Iran, mostly wear black chadors
Toudeshk-Cho (population 400) the smaller, older part of Toudeshk desert village. It was known for its camels when it was a Silk Road stopover but now provides an authentic desert village experience for travellers between Esfahan and Yazd. Think mud-brick buildings cooled by windtowers (badgirs in Farsi) and hospitable locals.