A no-plans city break is achievable and often genuinely good. But "no plans" doesn't mean no structure. It means minimal structure, applied in the right places.

The Minimum Viable Setup

Three things need booking before you arrive: the flight, the accommodation, and one restaurant. That's it. Everything else can be genuinely open.

The flight and accommodation are obvious. The one restaurant reservation deserves explanation. A city break with no bookings tends to collapse into whatever is available and convenient rather than whatever is good. One booking, ideally for the second or third evening when you've got your bearings, gives you something to look forward to and anchors the trip without constraining it.

Everything else, the neighbourhood you walk to, the lunch you find by following your nose, the bar you end up in, the market you discover by accident: leave this open. Genuinely open, not vaguely planned and abandoned. Accept that you don't know what you'll do tomorrow morning and resist the urge to decide tonight.

What Spontaneity Actually Produces

People expect spontaneous travel to produce a steady stream of discoveries and unexpectedly perfect moments. Sometimes it does. More often it produces a leisurely morning, a decent lunch from a place you spotted while walking, an afternoon with no particular shape, and an evening that comes together around 6pm when you've been in the city long enough to have opinions about where you want to eat.

This is a good outcome. It's not the adventure-film version of spontaneous travel, but it's genuinely restful and engaging in a way that tightly scheduled trips aren't. The bar you found because you turned left instead of right is more memorable than the bar from the list, not because it's better but because you found it.

Cities That Reward Wandering

Some cities pay back spontaneous exploration better than others. The common factor is density, legibility, and neighbourhood variety at street level.

Lisbon rewards wandering. The hills mean you're constantly seeing different angles of the city, and the neighbourhoods transition quickly enough that twenty minutes of walking produces a genuinely different environment. Porto is similar.

Barcelona's Eixample grid is beginner-friendly for wandering because you're never truly lost, but the Gràcia neighbourhood north of the grid is where spontaneous walking pays off best.

Rome is famously walkable and forgiving: the streets are dense with things to look at and the grid is loose enough that you're always finding something minor but interesting.

Cities Where Wandering Just Means Getting Lost

Some cities don't have the density or pedestrian quality to make spontaneous walking work well. Brussels outside the historic centre is largely offices and chain restaurants. Much of Amsterdam's tourist centre is compact enough that "wandering" returns you to the same canals repeatedly.

The other failure mode is cities where the interesting things are spread across large distances. Los Angeles and similar car-oriented cities are not good candidates for no-plans city breaks in the European tradition. The distance between interesting things is too great to cover on foot, and the spontaneity breaks down when every movement requires planning transport.

Stick to dense, walkable European cities, have the three bookings in place, and let everything else happen as it happens.