Xi'an to Dunhuang along the gap between the Qilian mountains and the Gobi — the road every caravan, army and Buddhist missionary took west, now covered by high-speed rail. Cliff-cut grottoes at Maijishan and Bingling, a Tibetan monastery town at 2,900 metres, striped sandstone at Zhangye, the fort where the Ming wall gives up, and 492 painted caves at the end of it.
Xi'an, inside the walls
The Ming city wall is 13.7 kilometres round and unbroken, and the sane way to see it is to hire a bicycle at the South Gate and ride the circuit. Below it, the Muslim Quarter and the Great Mosque, which is laid out as a Chinese courtyard temple — the minaret is a pagoda and there is not an arch in the place.
The Terracotta Army
Farmers sinking a well east of the city hit the first figure in March 1974. Three pits, roughly eight thousand figures, each built from a small set of moulded parts and then finished by hand — the individual faces the place is famous for are the last few minutes of work on a mass-produced body. Go at opening. Afterwards the Shaanxi History Museum, which needs booking days ahead and holds the Tang material that gives the caravan route its context.
Maijishan
A sandstone butte standing alone in wooded hills, cut with 194 surviving caves from the late fourth century onward and reached by steel walkways bolted to the face. An earthquake in 734 sheared off the middle of the cliff, which is why the caves survive in two groups with a hole between them.
Lanzhou
The only provincial capital the Yellow River runs through the middle of, and a city that smells of beef noodles from about six in the morning. The Gansu Provincial Museum has the bronze galloping horse dug out of an Eastern Han tomb at Wuwei in 1969, which became the national tourism emblem and is smaller than every reproduction of it.
Bingling Temple
Caves in a gorge you can only reach by water. The Liujiaxia dam flooded the valley in 1969 and the boat crossing exists because of it; the 27-metre Tang Maitreya at the end sits above where the road used to run. Water levels drop in winter and the boats stop, so this is a warm-season day.
South to Xiahe
Off the corridor and up onto the edge of the Tibetan plateau at 2,900 metres. Labrang was founded in 1709 and is one of the six great Gelug monasteries, with six colleges and a monk population that is a fraction of what it held. The guided tour — usually one late morning, one mid-afternoon — is the only way into the assembly halls; the rest of the complex you walk yourself.
The kora and the grassland
Walk the outer circuit at dawn with the pilgrims — three kilometres of covered galleries and over a thousand prayer wheels, turned by hand the whole way round. Afternoon out to the Sangke grassland, twelve kilometres west, where the town keeps its horses and the plateau opens out.
Back down and west to Zhangye
The long transfer. Morning bus down the valley to Lanzhou, then the afternoon high-speed train up the corridor. Zhangye was Ganzhou, and its Great Buddha Temple holds a 34.5-metre reclining Buddha of painted clay built under the Western Xia in 1098 — the largest indoor one in the country, in a hall that has to be walked twice to take in.
Danxia and Mati Si
Forty kilometres west, Cretaceous sandstone laid down in iron-stained bands and then tilted, which photographs as stripes and in flat midday light as beige. Go for the last two hours of daylight or the morning after rain. South of the city, Mati Si is a Tibetan and Yugur cave temple with stairways tunnelled up through the inside of the cliff.
Jiayuguan
The fort was begun in 1372 and is where the Ming wall stops. West of it the empire wrote off the desert; men were exiled through this gate and the wall behind it is rammed earth rather than brick. The Overhanging Wall climbs a ridge north-west, and the First Beacon Tower stands eroding on the lip of the Taolai gorge to the south.
Into Dunhuang
The high-speed line runs past Dunhuang rather than to it, so the last leg is a bus off the plateau into an oasis town of poplars and vineyards. Late afternoon at Mingsha Shan, where the dunes come to the edge of the streets and Crescent Lake has sat in a hollow between them for as long as anyone has written about it.
Mogao
Reception centre first, two films, then a shuttle to the cliff and a guide with a set of keys. Eight caves in about seventy-five minutes, chosen for you from the rotation open that week, no photography and no lingering. Book it weeks in advance — this is the one fixed point in the whole route.
Yumen Pass and the Yadan
West into genuine emptiness. The Han wall at Danggusui, a few kilometres from the pass, still stands three hundred metres long and knee-to-shoulder high in courses of gravel packed with reed and tamarisk bundles, two thousand years old and untouched because nobody lives near it. Yumenguan is a mud box in the gravel; the Yadan ridges another hundred kilometres on are wind-cut and entered only on the park's own bus. Fly out of Dunhuang or take the night train east.
Good to know
Check the visa position against your travel dates rather than against anything written a year earlier, because this one has moved every few months. China's unilateral visa-free scheme now admits around fifty nationalities for thirty days — most of the EU, with the UK and Canada added on 17 February 2026 — and it has been renewed in one-year increments rather than made permanent, currently to the end of 2026. A US passport is not on that list and still needs a visa applied for in advance. The 240-hour transit exemption is no substitute here: it admits you only to a listed set of provinces, and Gansu is not one of them, so everything west of Xi'an on this route sits outside it. Rail tickets come from 12306, the state railway system, and nothing else is authoritative — Trip.com resells the same inventory with a fee attached and is the easy route if you do not want to fight the app with a foreign passport. Seats are released a fixed number of days before departure, currently fifteen, and the Lanzhou–Jiayuguan legs sell out in July and August within the hour. There is no paper ticket: you tap your passport at a staffed gate rather than the automatic ones. Set up Alipay or WeChat Pay with a foreign card at home, not on arrival — both now accept them, cash is legal but genuinely awkward, and every bus, taxi and noodle shop on this route assumes a phone. Hotels register you with the local police at check-in, and the cheapest places in Tianshui, Zhangye and Jiayuguan will turn a foreign passport away for exactly that reason — they are not licensed to file it, which is a paperwork problem rather than an unfriendly one. Book somewhere that states it takes foreign guests instead of walking in. Mogao tickets are sold by the Dunhuang Academy on its own channel about a month ahead and are the single thing that should determine your dates. Xiahe sits inside Gannan Tibetan Autonomous Prefecture, which has been closed to foreign visitors at short notice in the past, most often around anniversaries in March; check before you commit to the two nights, and have Zhangye as the fallback. May and September are the season — Dunhuang runs past 35°C in July, drops well below freezing in winter, and spring brings sandstorms that ground flights and grey out the Danxia entirely.
Shorter or longer?
The railway south from Dunhuang to Golmud opened in 2019, so you can carry on to Xining by way of Qinghai Lake and the Ta'er monastery instead of retracing the corridor. Four or five more days and a much emptier country.
Fly into Lanzhou and run Zhangye, Jiayuguan and Dunhuang only. Cuts Xi'an, the two grotto days and the Tibetan detour, keeps the desert and the caves, and removes the single longest transfer.