Some of the finest sculpture in Britain has no queue, no admission charge and no closing time. It stands on a village green beside a bus shelter, at the end of a pier, in the middle of a roundabout, halfway up a hillside. You do not need to plan an exhibition visit to see it — you need only to slow down on a walk you were already taking. The reward is a particular kind of pleasure: meeting a serious work of art in ordinary weather, with traffic going past and someone walking a dog.

Start with what is already on your route

Before you travel anywhere, audit your own street. Most British towns and suburbs hold more public sculpture than their residents realise. There is usually a war memorial with a bronze figure or a carved stone cross, a Victorian fountain paid for by a mayor, a stone marker moved from an old market square, and at least one abstract piece from the 1960s or 1970s sitting outside a civic centre or library.

The habit worth developing is looking up and sideways rather than straight ahead. Sculpture is often placed above eye level — on building façades, over doorways, on cornices, on the corners of insurance offices and old banks. A ten-minute walk with your gaze lifted a few feet will usually turn up a carved keystone, a pair of stone lions, or a relief panel nobody has looked at properly in fifty years.

Civic squares and the art of the plinth

The town square is where British public sculpture is most formal and most political. Victorian monuments were designed to be seen from below and at a distance, which is why they are so tall; the plinth is theatre as much as support. Look at what has been chosen to stand on it, and at what has been left off.

Many squares now keep a plinth deliberately empty, or rotate temporary commissions on one that stood bare for decades. This is worth watching for, because temporary works are often the most adventurous things in town and cost nothing to see. Notice also the material: bronze turns green-black and streaky, sandstone soaks up soot, stainless steel holds the sky, and painted steel quietly rusts at every welded joint. Weathering is part of the artwork whether the sculptor intended it or not.

Parkland and sculpture trails

Sculpture behaves differently in a park. A work in a field is judged against sky and horizon, and you approach it across grass rather than pavement, which changes the whole experience. Many estates, country parks and city commons have waymarked trails of between one and four miles.

• Pick up the paper map at the gate, car park or visitor centre — signage on the ground is often incomplete.
• Wear boots you don't mind mudying. Trail surfaces vary between tarmac, mown grass and standing water.
• Allow more time than the distance suggests. The gaps between works are the point of the trail, not dead space.
• Go early or late. Low sun throws shadows that can transform a piece entirely, and you will have it to yourself.

Waterfronts, estuaries and the tide

Docks, harbours and estuaries offer the most dramatic setting of all, because water and light do half the work. Figures standing in tidal sand disappear and reappear twice a day; on the beach at Crosby, near Liverpool, a hundred cast-iron men face out to sea and are gradually colonised by barnacles. Similar tidal and dockside works can be found around harbours in Bristol, Cardiff, Belfast and the Scottish west coast.

Salt air accelerates corrosion, so these pieces change fastest of all. Check tide tables before walking out onto sand, keep to marked paths on working docks, and remember that a sculpture standing in deep water is not a climbing frame.

How to look at a piece without a label

Most public sculpture carries no interpretation panel. That is an invitation rather than a problem. Walk a complete circle around the work and note how it changes. Ask yourself where your eye level falls against it, what it blocks and what it frames, and which direction it seems to face. Notice whether it is placed to catch morning or evening light, and whether the trees, railings or buildings around it were part of the original plan or have grown up since.

Look at the base as closely as the figure. Foundry marks, carved initials, dates and dedication plaques are often hidden at ankle height, and they will tell you who paid, who made it and when the town decided it needed one.

Small courtesies, and making a habit of it

Public sculpture survives because people treat it gently. Please do not climb on bronzes or let dogs foul the plinths, and keep leads short around fragile stone. If you spot graffiti, missing lettering or a wobbly fixing, report it to the local authority's parks or heritage team — a short email with a photograph is genuinely useful, and often the only notification anyone receives.

Friends groups and civic societies frequently run free guided walks, usually on weekend mornings, and they are the fastest way to learn the local story. Otherwise, simply keep a mental list. Choose one square, park or waterfront within reach, walk it in a different season, and you will find that the sculpture you barely noticed in June has become an old acquaintance by November.