Prambanan

Prambanan or Rara Jonggrang (Javanese: ꦫꦫꦗꦺꦴꦁꦒꦿꦁ, romanized: Rara Jonggrang) is an 8th-century Hindu temple compound in Special Region of Yogyakarta, Indonesia, dedicated to the Trimūrti, the expression of God as the Creator (Brahma), the Preserver (Vishnu) and the Destroyer (Shiva). 

The temple compound is located approximately 17 kilometres (11 mi) northeast of the city of Yogyakarta on the boundary between Central Java and Yogyakarta provinces.

The temple compound, a UNESCO World Heritage Site, is the largest Hindu temple site in Indonesia and the second-largest in Southeast Asia after Angkor Wat. 

It is characterized by its tall and pointed architecture, typical of Hindu architecture, and by the towering 47-metre-high (154 ft) central building inside a large complex of individual temples. 

Prambanan temple compounds originally consists of 240 temple structures; which represents the grandeur of ancient Java's Hindu art and architecture, also considered as a masterpiece of the classical period in Indonesia. Prambanan attracts many visitors from around the world.

Source:

https://en.wikipedia.org/wiki/Prambanan

Ratu Boko

Ratu Boko (Javanese: Ratu Baka) or Ratu Boko Palace is an archaeological site in Java. Ratu Boko is located on a plateau, about three kilometres south of Prambanan temple complex in Yogyakarta, Indonesia. 

The original name of this site is still unclear, however the local inhabitants named this site after King Boko, the legendary king mentioned in Roro Jonggrang folklore. In Javanese, Ratu Boko means "Stork King".

The site covers 16 hectares in two hamlets (Dawung and Sambireja) of the village of Bokoharjo and Prambanan, Sleman Regency. In striking contrast to other Classic-period sites in Central Java and Yogyakarta, which are remains of temples, Ratu Boko displays attributes of an occupation or settlement site, although its precise function is unknown.

Probably the site was a palace complex which belonged to the kings of Sailendra or Mataram Kingdom that also built temples scattered across the Prambanan Plain. The argument was based on the fact that this complex was not a temple nor building with religious nature, but a fortified palace instead which evidence of a remnant of fortified walls and the dry moat of defensive structures.

The remains of settlements also founds in Ratu Boko vicinity. This site is located 196 m above the sea level, on the highest point in the site, there is a small pavilion from which one will be able to see a panoramic view of Prambanan temple with Mount Merapi as the background.

Source :

https://en.wikipedia.org/wiki/Ratu_Boko

Mendut

Mendut is a ninth-century Buddhist temple, located in Mendut village, Mungkid sub-district, Magelang Regency, Central Java, Indonesia. 

The temple is located about three kilometres east from Borobudur. Mendut, Borobudur and Pawon, all of which are Buddhist temples, are located in one straight line. There is a mutual religious relationship between the three temples, although the exact ritual process is unknown.

Sewu

Sewu (Javanese: ꦱꦺꦮꦸ, romanized: Sèwu) is an eighth century Mahayana Buddhist temple located 800 metres north of Prambanan in Central Java, Indonesia. 

The word for a Hindu or Buddhist temple in Indonesian is "candi," hence the common name is "Candi Sewu." 

Candi Sewu is the second largest Buddhist temple complex in Indonesia; Borobudur is the largest. Sewu predates nearby "Loro Jonggrang" temple at Prambanan. 

Although the complex consists of 249 temples, this Javanese name translates to 'a thousand temples,' which originated from popular local folklore (The Legend of Loro Jonggrang). Archaeologists believe the original name for the temple compound to be Manjusrigrha.

Source :https://en.wikipedia.org/wiki/Sewu

Kalasan

Kalasan (Indonesian: Candi Kalasan, Javanese: Candhi Kalasan), also known as Candi Kalibening, is an 8th-century Buddhist temple in Java, Indonesia. It is located 13 kilometers (8.1 mi) east of Yogyakarta on the way to Prambanan temple, on the south side of the main road Jalan Solo between Yogyakarta and Surakarta. Administratively, it is located in the Kalasan District of Sleman Regency.

Source :

https://en.wikipedia.org/wiki/Kalasan