Smaller cities within reach of saturated capitals are seeing visitor numbers climb. The shift is driven by price and transport connections rather than by any change in what those cities offer.
Rail links do most of the work
A second city becomes a substitute for a famous one at the point where the journey between them stops feeling like a separate trip. An hour by train is the rough threshold.
Below that, travellers treat the two as one destination and will sleep in whichever is cheaper. Above it, the smaller city has to stand entirely on its own appeal.
This is why improved rail service reliably precedes a rise in visitor numbers. The connection changes the mental geography before it changes the marketing.
Price gaps widen as the headline city fills
Accommodation pricing in a constrained city rises faster than in an unconstrained one, because supply cannot expand to meet demand within the historic core.
The nearby city has room to build and fewer planning restrictions, so its rates stay closer to what local costs justify. The gap between the two grows every peak season.
Once that gap covers the cost of the train and then some, the substitution becomes obvious. Travellers are not choosing the smaller city on merit so much as on arithmetic.
Second cities market against the first
Tourism boards have learned to position themselves explicitly as the alternative, using the larger city's name in their own promotion rather than avoiding it.
This is more effective than trying to build recognition from nothing. The traveller already intends to visit the region, and the pitch only has to redirect the booking.
The approach also attracts a different visitor. People who choose the alternative deliberately tend to stay longer and spend more locally than those passing through on a day trip.
Local infrastructure is sized for residents
The strain appears sooner than expected. A city built for its own population has a limited number of restaurants, a modest transport network and a small stock of central housing.
Growth that would be trivial in a capital is significant here. A rise that a large city would absorb without notice can visibly change a smaller centre in two or three seasons.
Housing pressure tends to surface first, as central apartments move into short-term letting. The complaints that follow are the same ones the larger city heard a decade earlier.
Success reproduces the original problem
The cities that successfully absorb overflow eventually face their own capacity limits, at which point the search moves one step further out along the same rail line.
Some are already introducing the registration schemes and letting restrictions that their larger neighbours pioneered, having watched how long those took to arrive.
The pattern suggests overflow is redistributed rather than resolved, moving down the hierarchy of cities until it meets somewhere with genuine spare capacity.