The Terracotta Warriors
The Terracotta Army was constructed to accompany the tomb of China's First Emperor as an afterlife guard. It is considered one of the greatest archaeological sites in the world, and one of the greatest discoveries of the 20th century.
Xi'an City Wall
As you leisurely stroll on some of the ancient city wall, you can best enjoy its inner and outer walls, watchtowers, moat, and landscaped environs, as well as slightly elevated views of the city. Having an expert guide will help you appreciate the city wall's history.
The Bell Tower
The Bell Tower is resplendent and magnificent, on the top of which stands a gilded bottle-shaped ornament which shines brightly in the sun. A 6-meter (20 feet) tall arched gate opens in the west, east, north and south sides respectively, through which all traffic passes.
Xi'an Drum Tower was built in the 13th year (1380) of the Hongwu Period during Emperor Zhu Yuanzhang's reign of the Ming Dynasty (1368-1644). It was renovated in the 38th year (1699) of Emperor Kangxi's reign and the 5th year (1740) of Emperor Qianlong's reign.
Big Wild Goose Pagoda
The Pagoda was built in the Tang Dynasty (618-907) for the study of Buddhist scriptures. Being attacked by centuries of weather, war and seismic activity destroyed most of the original material of the structure, a pagoda by this name and style still exists on the site.
Hua Shan boasts a lot of religious sites: Taoist temples, pavilions, and engraved scriptures are scattered all over the mountain. It is known as "the most precipitous mountain under heaven" and is probably the most dangerous mountain in the world frequented by hikers.
There are so many places that are worth visiting. You can make your own schedule according to your time of journey, and you can find all recommendations here with budget.