22 July Circle
The 22 July Circle (Thai: วงเวียน 22 กรกฎาคม, RTGS: Wongwian Yi Sip Song Karakadakhom) is a traffic circle in Thailand. It's an intersection of Maitri Chit, Santiphap and Mittraphan roads in Khwaeng Pom Prap, Pom Prap Sattru Phai district, Bangkok.
22 July Circle was built on January 24, 1918 to commemorate the occasion of Thailand's participation in World War I, which was the royal intention of King Vajiravudh (Rama VI), the king of Thailand at the time. Under his directives, the Ministry of Public Works of Siam constructed many roads in that area. King Vajiravudh also gave names to other roads nearby, such as Suea Pa or Phlapphla Chai roads. In the following reign of his bother, King Prajadhipok, the three roads branching from the 22 July Circle were intentionally named to stress Siam's participation in WWI on the side of the Allied powers: "Maitri Chit" means friendship, "Mittraphan" was intended to signified the Allied powers, and "Santiphap" means peace.
The name "22 July" comes from the date Thailand declared war, which corresponds to 22 July 1917.
At the center of the roundabout is a fountain and there's a small public park for general people to take a rest. The surrounding area is home to many billboard or advertising board shophouses, including tire and car spare parts shops and many famous restaurants. Besides, it's also known as another district of Bangkok's sex industry, it's been known for a long time. 
22 July Circle is considered one of the circuits in the Bangkok's Chinatown like another roundabout is Odeon Circle on Yaowarat road. It's close to many important places such as Bangkok railway station (Hua Lamphong), Wat Phlapphla Chai, Wat Thepsirin, The Maitrichit Chinese Baptist Church, the first Protestant church in Thailand, Wat Khanikaphon, including Poh Teck Tung Foundation's headquarters.
- ซูม (2009-07-19). "วงเวียน 22 กรกฎา". Thai Rath (in Thai).
- "บุกแหล่งค้าประเวณี ย่านวงเวียน 22 พบยืนรอรับลูกค้าตามซอกมุมซอกตึก". Channel 7 (in Thai). 2017-05-01.
- "ประวัติคริสตจักร 175 ปี". maitrichitchurch.org (in Thai).