The site of Passagard is located 87 kilometers (54 miles) northeast of Persepolis, which is now located in Fars province of Iran and the first capital of Achaemenid Empire. Cyrus II began to build the city in 546 (or later), but the city was not completed because Cyrus II was killed in the war in 530 or 529. However, Passagard was the capital of Achaemenid Empire until Darius I planned to establish its capital in Persepolis. The name Pasalgard comes from Greek, but it may also come from an earlier name during the Achaemenid Empire (P? Serag. Da, meaning Persian garden) evolved.

The site of Passagard covers an area of 1.6 square kilometers, including a building widely regarded as the tomb of Cyrus II, a fortress on a nearby hill, and the ruins of two palaces and gardens. These gardens also include the earliest known quadruple garden design.

The latest research on the structural engineering of Passagade building shows that the buildings designed for this city by the engineers of Achemenid Empire can withstand severe earthquakes, and the current earthquake magnitude is about 7.0 on the Richter scale. The foundation is equivalent to today's seismic strengthening design, which was adopted by many countries not long ago, such as nuclear power generation, which needs to reduce the impact of the earthquake.

The most important relic of Cyrus II's mausoleum, Passagard, is Cyrus II's mausoleum. There are always six broad steps outside. The tomb is 3. 17m long, 2.1m wide and 2.1m high, with a low and narrow entrance. Although there is no clear evidence that this is the tomb of Cyrus II, according to the records of Greek historians, Alexander the Great regarded it as the tomb of Cyrus II. Alexander the Great plundered and destroyed Persepolis and visited the mausoleum. In Allen's works, it is recorded that Alexander the Great ordered a soldier to enter the mausoleum and found a bed made of gold, a table with utensils, a golden coffin, some ornaments decorated with precious jewels and inscriptions on the mausoleum, but these inscriptions have not been preserved until now.

According to some classical scholars, the form and architecture of this mausoleum are closely related to urartu in the same period [2]. In particular, the mausoleum of Passagard is almost as big as that of King Ariat of Lydia (the father of Croso), but many scholars do not agree with this view. Some scholars think that Cyrus II may "bring in" Lydian craftsmen to build this tomb. The main design of the mausoleum is the rose pattern on the inner door of the gables [3]. Generally speaking, Pasalgard can be regarded as a collection of many Persian traditional cultures (inherited from Elam, Babylon, Assyria and ancient Egypt), and influenced by some Lydia.

During the Arab rule in Iran, their troops tried to destroy the mausoleum, believing that it violated the teachings of Islam. However, the manager of the mausoleum persuaded the Arab rulers that the building was not built for Cyrus II, but as the tomb of Solomon's mother, so the building was not destroyed.

Ganling:

Ganling was built in 684 AD, and it took 23 years for the project to be basically completed. Magnificent momentum. There are three peaks in Liangshan, with the northern peak being the highest, with an altitude of 1047.9 meters. The two peaks in the south are low-lying, east-west, with Sima Dao in the middle, so they are named "Feng Ru". According to historical records, the mausoleum originally had two inner and outer walls, four city gates, and many magnificent buildings such as Xiandian Quelou. Exploration shows that the total area of the inner city is 240 square meters. There are Zhuque Gate in the south, Xuanwu Gate in the north, Qinglong Gate in the east and Baihu Gate in the west. Stepping on the stone steps from the gate of Ganlingtou, there are 537 steps, and the height difference of the steps is 81.68m.. Walking through the steps is a flat and wide road until you reach the Tang Gaozong Mausoleum Monument, which is called Sima Dao. Huabiao 1 pair, winged horse ostrich 1 pair, Shima 5 pairs, Weng Zhong 10 pair, and 2 stone tablets on both sides. There is no word tablet in the east, and there is a sacred tablet in the west. There are 6 statues of Wang Bin 1 statue, 6 lions1pair and 7 tombs1pair around. The 2-meter-high tombstone of Tang Gaozong Mausoleum was erected by Emperor Gao Zongli in Biyuan County, Shaanxi Province. The original tombstone has been destroyed, and it is now rebuilt during the Qianlong period of Qing Dynasty. On the right front of this monument, another tombstone inscribed by Guo Moruo is "Tomb of Tang Gaozong Li Zhi and Zetian Emperor", 12 Chinese characters. In addition, outside the South Gate, there are two "memorials" and "wordless monuments" praising Emperor Gaozong and Wu Zetian, as well as 61 stone statues of leaders of China's ethnic minorities and envoys of friendly countries who attended the funeral of Emperor Gaozong. In the history of China, the number, types and placement of stone carvings in front of the mausoleum began to have a fixed system, which continued until the Qing Dynasty, and the past dynasties were similar.

For reference only, I hope it helps.