To explore Hong Kong, China, start by rethinking your approach. What is worth seeing here is not a few isolated sights, but layers of officially named historic places that sit close together: the territory has 138 declared monuments, another 205 Grade I historic buildings, and about 8800 historic buildings recorded in the territory-wide survey from 1996 to 2000. Behind these numbers are four completely different settings: the two shores of Victoria Harbour, the old city of Kowloon, the walled villages of the New Territories, and the coastal defences of the outlying islands. Link them up district by district, and in 4 days you can walk a route with real depth.
The first section is the modern-architecture route on the two shores of Victoria Harbour, and it is the easiest stretch to walk. From Central to Sheung Wan, declared monuments stand thick within walking distance: the Former Central Police Station Compound, made up of the Former Central Police Station, the Former Central Magistracy and the Former Victoria Prison, has been revitalised into art and history spaces. A little uphill stands the Man Mo Temple on Hollywood Road, dedicated to Wenchang, the God of Literature, and Lord Guan (Guandi); its bronze bell and ceremonial palanquin attest to the continuity of worship in the district. Along Garden Road you can see the Gothic St John's Cathedral, and towards Hong Kong Park is the Former Commander-in-Chief's Residence, now the Flagstaff House Museum of Tea Ware. On Duddell Street in Central, four gas lamps and granite stone steps remain, and when the lamps are lit at dusk they make a rare gentle scene in the old city. You need no transport on this route, and a single day on foot fits it perfectly.
The second section is the street-life and archaeology route of old Kowloon. The former Tsim Sha Tsui railway terminus was long ago demolished, leaving only the red-brick clock tower built in 1915 and 44 metres tall; it now stands alone by Victoria Harbour and is the first memory of Kowloon for many people. Heading north along Nathan Road, the Lei Cheng Uk Han Tomb in Sham Shui Po is a brick-chambered tomb from the Eastern Han period, where pottery and coins were unearthed, and a museum stands on the original site. Further east, Kowloon Walled City Park preserves the South Gate Remains and the stone lintel and couplets of the yamen, recording the rise and fall of a city within a city. The pleasure of this section lies in how the old and the new sit side by side: a temple next to a market, ruins next to a cha chaan teng (Hong Kong-style cafe).
The third section is the walled-village and ancestral-hall route of the New Territories, the layer most easily overlooked in Hong Kong. The grey-brick perimeter walls and linked iron gates of Kat Hing Wai in Kam Tin are the emblem of a Tang clan settlement, while Tsang Tai Uk in Sha Tin forms a complete compound of three halls and two courtyards with perimeter walls and watchtowers. Along the Ping Shan Heritage Trail, the Tang Ancestral Hall and the Tsui Sing Lau Pagoda stand one after the other, linking the life of the clans across several hundred years. Fanling's Lung Yeuk Tau is a walled-village group of five walled villages and six villages, and the gatehouse, perimeter walls and watchtower of Kun Lung Wai are well preserved. Sam Tung Uk in Tsuen Wan is a typical Hakka walled village, now turned into a museum. On this route, walk slowly: what you are looking at is how people lived, not how tall the buildings were.
The fourth section is the coastal-defence and rock-carving route of the outlying islands. The Tung Chung Fort, Lantau Island, is a coastal-defence site from the Qing period; its walls and gun emplacements remain, and it is now a seaside fort park. The Yeung Hau Temple, Tai O, guards the village's memories of salt-making and fishing, with stilt houses and the rope-drawn ferry as its most vivid backdrop. The Waglan Lighthouse, Waglan Island, is built of granite and long guided ships along the sea lane; it belongs to the Islands District and is not open to the public, so you can only glimpse it from a distance as you pass. The rhythm of the outlying islands is far slower than the city, and ferries are limited, so check the timetable before you set out.
Between these four sections, Hong Kong also has a layer of nature you should not miss. In the east, the Hong Kong UNESCO Global Geopark is known for its hexagonal rock columns, which average 1.2 metres in diameter, spread across about 100 square kilometres of land and sea, and formed about 140 million years ago. Around Sai Kung and Tolo Channel there are also broad stretches of islands, bays and hill trails, making both hiking and sea views easy. This layer needs no ticket, but it does need time and energy, so it suits a flexible day in your itinerary.
For a 4-day plan, here is how to arrange it. On the first day, walk the modern-architecture route on the two shores of Victoria Harbour: the Former Central Police Station Compound, the Man Mo Temple and St John's Cathedral in Central, all on foot, then head to Tsim Sha Tsui at dusk for the clock tower and the Victoria Harbour night view. On the second day, take old Kowloon: the Lei Cheng Uk Han Tomb and Kowloon Walled City Park in the morning, then markets and cha chaan teng in the streets of Mong Kok and Sham Shui Po in the afternoon. On the third day, go into the New Territories and pick either the Ping Shan Heritage Trail in Yuen Long or Lung Yeuk Tau in Fanling, taking your time over walled villages and ancestral halls. Leave the fourth day for the outlying islands or a geopark: see the stilt houses and old temples at Tai O, or the rock columns and bays at Sai Kung, and keep some margin for your flight home.
Transport and bookings decide how tight or relaxed your trip feels. Central, Tsim Sha Tsui, Mong Kok and Sham Shui Po all lie along the MTR, with monuments within walking distance of one another, making this the most efficient section. Ping Shan, Lung Yeuk Tau and Sam Tung Uk in the New Territories require a change to the Light Rail or a bus, so it is best to finish one section in a single trip. The outlying islands depend on ferries with limited sailings, so check the return times before you set out. Most museums close one fixed day a week, so when planning, save the closing day for streets and the outdoors, which is far more relaxed than changing your route at the last minute.
Food needs almost no advance planning, and it sets the shared tone of any Hong Kong trip. Cantonese cuisine prizes freshness and natural flavour: the dim sum ritual of "one pot of tea with two dim sum", a plate of siu mei (Cantonese roast meats), a bowl of wonton noodles, all are the most everyday tastes. The cha chaan teng (Hong Kong-style cafe) mixes Chinese and Western flavours, and milk tea and a pineapple bun with butter are the footnote to the local rhythm. Put one proper Cantonese meal and one afternoon tea into any day, and your itinerary has the breathing of the place.
If you have only a day or two, there is also a stripped-down highlights route: in the morning, walk the Former Central Police Station Compound, the Man Mo Temple and St John's Cathedral in Central; at noon, eat at a cha chaan teng; in the afternoon, cross the harbour to Tsim Sha Tsui for the clock tower and Victoria Harbour; at dusk, stroll around the Avenue of Stars. This route uses almost no transport, yet shows you three faces of Hong Kong at once: colonial-era architecture, street life, and harbour scenery. If time is even tighter, keep only the Central and Tsim Sha Tsui sections, and you will not feel you missed anything.
Where you stay and how you travel also shape how you play. The four monument routes in the urban area sit close to one another, so keeping your lodging along the MTR saves time both ways. If you plan to walk a lot and take many photos, the waterfront districts of Central, Sheung Wan or Tsim Sha Tsui are the most convenient: step out morning or evening and Victoria Harbour is right there. For the New Territories and the outlying islands, get up early, because services are limited and a late start eats into your margin for the return trip. Mark each day's base on a map, and you can see at a glance how tight or relaxed the plan is.
Finally, a few scheduling tips. Monuments and museums mostly have opening hours and closing days, so checking once before you leave is the safest bet. Some declared monuments are not open to the public, or open only their exterior, and confirming in advance saves wasted trips. In summer, avoid midday for outdoor routes and carry an umbrella; in winter, you can safely give a whole day to walking. Hong Kong's strength lies in its density: 4 days is short, but if you go district by district you can take in the architecture of the colonial era, the street life of the old city, the clans of the walled villages and the sea of the outlying islands. These four temperaments layered together make the whole of Hong Kong.