Persepolis was the ancient capital of the Persian Empire during the Achaemenid era. Founded by Darius I around 515BC, the city stood as a magnificent monument to the vast power of Persian kings. Famously, the city's great palace of Xerxes was set alight by Alexander the Great's troops in 330BC. The subsequent fire burned vast swathes of the city.Today the imposing remains of Persepolis stand in modern-day Iran and the site is also known as Takht-e Jamshid.
The Khaju Bridge, or Khajoo Bridge, in Iran's Isfahan region is a 17th-century structure, built as both a dam and a community space. It was erected under the rule of the Safavid Dynasty and boasts more than 20 arches. Today, water scarcely flows beneath the Khaju Bridge. A dam was built in 1972 that blocks the flow of the Zayanderud for most of the year. Nonetheless, the structure is remarkably well preserved and well worth a visit.