Why Tallinn for a city break?
Tallinn has the best-preserved medieval old town in Northern Europe — a walled city of Gothic town halls, limestone merchant houses, medieval towers and cobbled lanes that escaped Soviet-era demolition and stands today almost exactly as it did in the 15th century. It is a UNESCO World Heritage Site of extraordinary completeness. It is also the most digitally advanced small nation on earth (Estonia invented Skype, pioneered e-residency and has operated digital elections since 2005) — and the contrast between the medieval streetscape and the startup culture thriving within and around it gives Tallinn a distinctive, slightly improbable character.
From London it's three hours — direct flights from Heathrow, Gatwick and a handful of regional airports. Tallinn Airport is 4km from the centre (tram or taxi, under €10). The city is excellent value: a good dinner with wine costs under £20, a craft beer is £2.50, and a full day of sightseeing in the old town costs almost nothing. Go in May to September for the best weather; December brings one of the finest Christmas markets in the Baltics, with open fires in the medieval town hall square. Helsinki is two hours by high-speed ferry across the Gulf of Finland — a very easy day trip.