Tehran, or Teheran, is the capital and largest city of Iran. The city has a mixture of old and historical mosques and synagogues with modern structures. Some archaeological excavations found that there were ancient civilizations in the area since back 6,000 years BC. There are beautiful places to see all around the city, like: the Freedom Monument, the Azadi Tower, the Museum of the National Jewels, the Golestan Palace, the Safir Office Machines Museum, the Glassware Museum, the Niavaran Palace, the Crown Jewels, the Ebrat Museum, the Green Palace, the Shams ol-Emāreh building, the Sadabad Palace Complex, the Carpet Museum, the Museum of Contemporary Art, the Talar Vahdat Theatre, the Reza Abbasi Museum, the Time Museum and the Money Museum.