08:30 Tiananmen Square — security queue, passport required, 30 minutes. 09:00 Forbidden City, south to north, three hours. Booked seven days ahead. 13:00 Lunch near Jingshan, then climb Jingshan Park for the roofscape view. 15:30 Walk north to the hutongs around Nanluoguxiang and Yandai Xiejie. 19:00 Peking duck — Siji Minfu near the Forbidden City, or Da Dong for a more polished version. 21:00 Houhai lake, which is a lake, a bar street and a spectacle.
Day 2 — the Wall
07:00 Depart for Mutianyu. Two hours with a car. 09:00 Cable car up, walk the restored section west, toboggan down. 13:00 Lunch in a village restaurant — trout and chestnuts are the local specialities. 16:00 Return to the city, rest. 18:30 Temple of Heaven park, where locals dance and play cards at dusk. The park is ¥15; the halls close earlier. 20:00 Dinner in the Qianmen area.
Day 3 — pick one
Then transfer to Xi’an on the 16:00 train, arriving for dinner at 20:30 — or stay a fourth night, which most people should.
Practical notes
The Forbidden City is closed Mondays. Tiananmen requires a separate advance reservation. Metro is the fastest way around; taxis are cheap but traffic is severe 17:00–19:00. Air quality varies enormously; check the AQI in winter and shift outdoor days accordingly. Cash is not needed. Alipay works everywhere.
Frequently asked Is 3 days enough for Beijing?+ Enough for the Wall, the Forbidden City and two neighbourhoods. Four days is comfortable.
Which day should I do the Great Wall?+ Day two. It is the most physically demanding day and you want fresh legs, but not your first jet-lagged morning.
Do I need to book Tiananmen Square?+ Yes, a separate free reservation in advance, in addition to the Forbidden City ticket.