Sam Roi Yot Beach, Prachuap Khiri Khan, Thailand

Khao Sam Roi Yot (Thai: เขาสามร้อยยอด) is a marine national park in Sam Roi Yot district, Prachuap Khiri Khan Province, Thailand. It covers 98.08 km², of which 20.88 km² are marine areas. The park was established in 1966, and was the first coastal national park of Thailand.

The Gulf of Thailand (Thai: อ่าวไทย, RTGS: Ao Thai, Thai pronunciation: [ʔàːw tʰaj]), also known to Malays as Teluk Siam, literally meaning Gulf of Siam, and Boeung Tonle Siem in Khmer, is a shallow arm of the South China Sea.

Prachuap Khiri Khan (Thai ประจวบคีรีขันธ์ (Pronunciation)) is one of the central provinces (changwat) of Thailand located in the northern part of the Malay Peninsula, some 240 km (150 mi) south of Bangkok. Neighboring provinces are Phetchaburi in the north and Chumphon in the south. To the west it borders Tanintharyi Division of Myanmar.

Thailand is divided into 76 provinces (Thai: จังหวัด, changwat) and the special administrative unit Bangkok (กรุงเทพมหานคร, Krung Thep Maha Nakhon). Though a different administrative unit, Bangkok is at province level, so de facto Thailand has 77 provinces.

Each of Thailand's 76 provinces is divided into districts - as of 2010^[update] there are 878 districts (อำเภอ, amphoe) and 50 districts in Bangkok (เขต, khet). Each of the provinces has one capital district (อำเภอเมือง, amphoe mueang), e.g. for Chiang Mai it's Amphoe Mueang Chiang Mai. The exception is Ayutthaya Province, where both the province as well as the capital district have the full name Phra Nakhon Si Ayutthaya.

In Bangkok the districts are called khet (เขต), and their subdivisions khwaeng (แขวง) which are equivalent to the tambon (sub-districts) in the other provinces.

The tambon are further subdivided into muban (หมู่บ้าน), which are usually translated as villages, though they do not necessarily cover one single settlement.

Thailand is a unitary state which consists of seventy-six provinces (changwat) and one special administrative area representing the capital Bangkok.

The rule of thirds is a "rule of thumb" or guideline which applies to the process of composing visual images such as designs, films, paintings, and photographs. The guideline proposes that an image should be imagined as divided into nine equal parts by two equally-spaced horizontal lines and two equally-spaced vertical lines, and that important compositional elements should be placed along these lines or their intersections. Proponents of the technique claim that aligning a subject with these points creates more tension, energy and interest in the composition than simply centering the subject would.^{[citation needed]}

The photograph to the right demonstrates the application of the rule of thirds. The horizon sits at the horizontal line dividing the lower third of the photo from the upper two-thirds. The tree sits at the intersection of two lines, sometimes called a power point or a crash point^{[citation needed]}. Points of interest in the photo don't have to actually touch one of these lines to take advantage of the rule of thirds.^{[citation needed]} For example, the brightest part of the sky near the horizon where the sun recently set does not fall directly on one of the lines, but does fall near the intersection of two of the lines, close enough to take advantage of the rule.

Western Thailand is a region of Thailand bordering Myanmar on the west and Central Thailand on the east.