The history of Iran, which was commonly known until the mid-20th century as Persia in the Western world. Iran is home to one of the world's oldest continuous major civilizations, with historical and urban settlements dating back to 7000 BC. Still, Iran is a huge country with different climates, cultures & folks all around the country. They may speak their local languages & eat their local foods but they have all one thing in common; being an Iranian. I'd like to talk more about this beautiful country & I start with the question that I've been asked a lot lately:
People always ask me what is the difference between Persian & Iranian. I have to say both are the same but when we are talking about Persia is more about the history, culture & the food & Iran is the country especially it refers to after revolution. 

There is a very interesting article about traveling to Iran by "Becki Enright" that I suggest you read if you'd like to go to Iran, Please, click on this link to read it. 

Iran is a four-season country, which means in different corners of the country, you can experience different climates, different local food & different architecture based on that climate. The season that I suggest for visiting Iran is mid-April till May. We usually have warm summers & it can be difficult if you are not used to the temperature. There are main cities that every local suggest you visit, cities such as Tehran, Ispahan & Shiraz. Here's the best of all these cities that you can visit:

Tehran: Tehran is a large city with a population of more than 15 million people. So, it's crowded & very large. You need to plan to visit places that are close to each other. You need to visit: Bazaar Tajrish, Saadabad palace, Darband, bazaar Bozorg, Golestan Palace, The national jewelry museum, National Museum of Iran, Niavaran palace,. There are also great art galleries that you can visit such as Shirin gallery, Farchchian museum & Sayeh art gallery. 
Ispahan: Ispahan is a very important city in the history of the country. Before it was the capital of Iran & there are places that you must visit during your stay: Chehel Sotoun, Ali Qapu palace, Jameh mosque of Ispahan, Si O Se Pol bridge, Shah mosque. 

Shiraz: Shiraz is the cultural heart of Iran & it was the city of the Persian Empire "Takhte Jamshid" or "Persepolis". The name of Persepolis is on the list of UNESCO World Heritage for its distinctive archeological sites. We call it "Takht-e Jamshid" which means the throne of Jamshid who is believed to be one of the first kings ruling over Persia according to Persian mythology. Unfortunately, nowadays, there isn't a lot to see when you visit the palace but still, it's a historic place.  Besides, you need to visit Vakil Bazaar, Shah Cheragh, Tomb of Hafez, Nasir-al Mulk mosque & Eram garden. 

Please read more about incredible things to do in Iran by clicking on this link & this link.

You have to be careful that there is a dress code in the country. All the email visitors should cover their head with a  shawl or scarf & they should wear long dresses or manteu. Men are forbidden to wear shorts in public. You can read more about these adjustments by clicking on this link or this one.

Iranian are very welcoming & they can try to do their best to offer you the best experience. 

“You don’t even need to book a hotel in Iran, just stand on the street with a perplexed look on your face and a local family will invite you into their home.” – Danish traveler.

While I wouldn’t rely on this, it would probably happen a lot in Iran. The minute you pull out a map, someone is there to help you. Often if you look thirsty, someone will invite you in for tea and it only takes about 3 minutes of honest conversation before your new Iranian friend will offer up their home, their table, and their life in hopes of making you feel welcome. Granting hospitality to foreigners is deeply ingrained in the Iranian culture and they feel very embarrassed about how they are portrayed in the global media. Check this link to know more.