Where these facts come from, and how to tell us we are wrong.

The honest position

The dataset behind this site was written editorially for the launch build. It is a considered first draft by people who know Europe, not a citation-backed reference work, and it has not yet been through a source-by-source verification pass. Costs, opening seasons, currencies, visa positions and border arrangements all move.

Before you travel, check the official source — your own government's travel advice, the destination country's border authority, and the operator's own site for anything you intend to turn up for.

What is derived rather than claimed

• Distances are computed great-circle kilometres between the coordinates on each city page. They are honest as straight lines and misleading as travel times — the note under each hop says which mode the distance implies.
• Scores are computed from tags by a published formula: /method.
• Cost estimates multiply nights by the country's daily band and add a distance-based transport figure. They are planning arithmetic, not quotes.
• Nearby stops are computed, never curated, so they cannot flatter a partner.

The verification plan

1. Every country's practical facts — currency, blocs, entry, costs — checked against the relevant official body and dated in the data file.
2. Every city's seasonal and opening claims checked against the operator or municipality.
3. A visible "checked on" date on every country page; anything unchecked says so.
4. A standing correction log, published, with what changed and when.