Cheomseongdae is the oldest existing astronomical observatory in Asia. Constructed during the reign of Queen Seon-deok (632-647), it was used for observing the stars in order to forecast the weather. This stone structure is a beautiful combination of straight lines and curves, and was designated as National Treasure No.31 on December 20th, 1962. Cheomseongdae was built in a cylinder shape with stones 30cm in diameter. 362 stones were piled up to make 27 levels. Roughly 4.16m up from the bottom there is a 1㎡ square entrance and a space to hang a ladder under it. The inside is filled with soil up to the 12th level, and the 19th, 20th, 25th, and 26th levels all have long rocks hanging on two areas, shaped as the Chinese letter '井' (jeong). It stands 9.17m high and the base stone on each side measures 5.35m.

According to the historical records of Samguk-sagi, Wolji Pond was built during the 14th year of King Munmu (r. 661-681 AD) of the Silla Kingdom (57 BC-935 AD). Small mountains were created inside the palace walls, beautiful flowers were planted, and rare animals were brought in to create an exquisitely exotic garden fit for royalty. The pond was originally built in Wolseung Fortress (built in 101 AD during the Silla period), but the fortress was destroyed and now lies in ruins. In 1974, an excavation project revealed large spherical shapes (measuring 200 meters in diameter and 180 meters in height) which indicated that 3 islands had been located in the pond. Thanks to these important findings and existing historical records, Wolji Pond has been restored to nearly its former glory.

Located in Gyeongju-si, Gyeongju Gyochon Village is a hanok village that allows visitors a look inside life of famous the Choi Clan. Visitors can see the House of the Gyeongju Choi Clan (Important Folklore Material No. 27) and try some Gyeongju Gyodong Beopju Liquor (Important Intangible Cultural Asset No. 86-3) inside the village.

Large ancient tombs of kings and nobles of the Silla Kingdom can be seen around Gyeongju at the Daereungwon Tomb Complex (Cheonmachong Tomb). There are twenty-three large tombs located here; the most famous being Cheonmachong and Hwangnamdaechong. In an excavation of the area in the 1970s, Cheonmachong was discovered with a painting of a mounted horse. This painting is the only discovered painting from the Silla era. You can also view the inside of Cheonmachong. There are 11,526 remains and royal crowns inside the tomb, demonstrating the lavish lifestyle of the king. Another tourist attraction is Hwangnamdaechong, the largest ancient tomb. It houses the bodies of both the king and queen and has over 30 thousand relics and gold accessories. The unique thing about Hwangnamdaechong is that the queen's tomb has more luxurious accessories. Researchers have concluded that even the queen can have a high social position before marriage.

Seokguram, located on Tohamsan Mountain, is the representative stone temple of Korea. The official name of Seokguram, National Treasure No. 24, is Seokguram Seokgul. Designated as a World Cultural Heritage Site by UNESCO in 1995, it is an artificial stone temple made of granite. The construction was started by Kim Dae-Seong (700-774) in 751 during the reign of King Gyeong-Deok (742-765) of the Silla Kingdom (57 BC - AD 935) and it was finished twenty-four years later in 774, during the reign of King Hye-Gong (765-780).

Bulguk Temple is the representative relic of Gyeongju and was designated as a World Cultural Asset by UNESCO in 1995. The beauty of the temple itself and the artistic touch of the stone relics are known throughout the world.