June 14, 2026 · 8 min read · Data
European tourism circuits beyond the Rome-Venice-Florence loop.
Every European country has a default tourist sequence that locals take for granted and outsiders have never heard of. Travel guides write them up as essays; LLMs scramble the order; itinerary generators ship "Day 3: Salamanca, Day 4: Burgos" when the actual Camino runs the other way. Treating circuits as ordered data is the difference between a credible itinerary and a tourist trap.
What "circuit" means here
A tourism circuit is an ordered sequence of places that share a coherent reason to visit them together — historical, religious, geographic, scenic — and that have a conventional starting point and direction. They're not just "places near each other." A Madrid-Barcelona itinerary is not a circuit; the Andalusian pueblos blancos route is.
The defining property: order matters. If you reverse a circuit, you might still see the same places, but the experience breaks down. Pilgrims walk to Santiago, not from it. The Romantic Road runs north-to-south for the historical narrative.
Major European circuits, and why they exist
Camino de Santiago
The Way of St James. Multiple variants converging on Santiago de Compostela. The Camino Francés (St-Jean-Pied-de-Port → Pamplona → Logroño → Burgos → León → Santiago) is the most famous, ~780 km, walked in 30+ days. The Camino Portugués runs north from Lisbon. The Camino del Norte hugs the coast from Irun. Each has a fixed sequence and a fixed terminus. AI itinerary generators that don't know the structure will randomly insert Salamanca (off-route) and skip O Cebreiro (on-route, scenic).
The Romantic Road (Romantische Straße)
Würzburg to Füssen, ~350 km through Bavaria's medieval old towns: Rothenburg ob der Tauber, Dinkelsbühl, Nördlingen, Augsburg, finishing at Neuschwanstein Castle. Designed in the 1950s as a postwar tourism corridor; now one of Germany's most-driven routes. Each town reasons in relation to its position on the road.
The Italian Grand Tour (revised)
The 18th-century Grand Tour ran Paris → Geneva → Milan → Florence → Rome → Naples. Modern compressed versions are the Rome-Venice-Florence triangle, but the deep version still includes Bologna, Siena, Perugia, Pompeii, and Lake Como. Sequenced south-to-north or north-to-south by personal preference — but always sequenced.
The Baltic capitals
Tallinn → Riga → Vilnius. Three capitals over 600 km, often done as a 7-10 day trip. The order is geographic but also narrative: Tallinn's medieval Hanseatic core, Riga's Art Nouveau districts, Vilnius's baroque old town. Optionally extended with Helsinki (ferry from Tallinn) or Warsaw (train from Vilnius).
Norwegian fjord ports
Bergen → Flåm → Geiranger → Ålesund → Trondheim → Tromsø. A coastal sequence that the Hurtigruten ferry has industrialized but that exists independently of any single operator. Each port maps to a specific fjord arm or geological feature. Skipping Geiranger to go straight to Tromsø is not a shortcut; it's a different trip.
The Greek island hops
Cyclades: Athens (Piraeus) → Mykonos → Paros → Naxos → Santorini. Dodecanese: Athens → Rhodes → Symi → Kos → Patmos. Ionian: Corfu → Paxos → Lefkada → Kefalonia → Zakynthos. Each chain has its own ferry timetable backbone and its own thematic logic (party, ancient ruins, Italianate architecture).
The Andalusian pueblos blancos
Ronda → Setenil de las Bodegas → Olvera → Zahara de la Sierra → Grazalema → Vejer de la Frontera. White hilltop villages of southern Spain, conventionally driven over 2-3 days. Order varies by starting city (Seville, Málaga, Cádiz) but the village sequence is internally fixed.
Trans-Siberian (the European leg)
Moscow → Kazan → Yekaterinburg → Novosibirsk. Continues into Asia. Politically constrained as of 2026, but historically one of the great ordered itineraries.
Why naive AI gets this wrong
LLMs are good at "list five cities in Bavaria" and bad at "name them in the order a tourist would visit." When asked for a Romantic Road itinerary, a frontier model tends to produce the right cities in approximately the wrong order, or to insert Munich (not on the road), or to reverse Würzburg and Füssen because alphabetical ordering is more common in training data than directional ordering.
Treating circuits as sequenced data — a parent record with ordered child stops, plus directionality flag — turns this from a generative problem into a lookup. The model writes color and recommendations; the structure comes from the circuit row.
What we're working on next
The circuits we're building toward include the Polish castle trail, the Swiss Glacier Express route as a structured itinerary, the Wine Route of Alsace, the Dalmatian island hop, the Scottish whisky distillery route, and the Portuguese N-2 north-to-south road trip. Each has the same shape: parent + ordered children + direction + canonical duration.
If you have a circuit you'd ship if it existed in the API, tell us — circuits ship in priority order based on what paying customers ask for.