One of the largest city squares in the world, Naqsh-e Jahan Square (Pattern of the World Square), is in the city of Isfahan, built in the early 17th Century. -Getty Images
Sited in Naqsh-e Jahan Square is the Imam Mosque (renamed so after the 1979 revolution). It is decorated with elaborate tiles and also registered as a Unesco World Heritage site. -Getty Images
Persepolis was the capital of the Achaemenid Empire, and dates back to 515 BC. It was declared by Unesco to be a World Heritage Site in 1979. -Getty Images
The Azadi (Freedom) Tower in the centre of Iran was originally commissioned by the last Shah of Iran, Mohammad Reza Pahlavi, to mark the 2,500th year of the foundation of the Imperial State of Iran.
It was renamed after the 1979 Revolution which removed him from power, and is the site of major gatherings celebrating the Islamic republic. -Getty Images
The Mausoleum of Ruhollah Khomeini houses the tombs of Ayatollah Ruhollah Khomeini - the founder of the Islamic republic - and his family, together with other political figures. It is an important site of pilgrimage in modern Iran. -Getty Images