Tallinn

Estonia has built a global reputation as one of the most digitally advanced countries on earth — nearly all government services, from voting to filing taxes, run online, and the country's e-Residency program lets foreigners register businesses remotely. That reputation sits oddly next to Tallinn's Old Town, which looks close to untouched since the 15th century: full city walls, nearly 20 surviving defensive towers, and a street layout that hasn't meaningfully changed since the Hanseatic League ran trade through it. Both things are true of the same small country at once.

The Old Town splits into two distinct halves. Toompea, on a limestone hill, was historically the seat of nobility and administration — it still holds Estonia's parliament building and Alexander Nevsky Cathedral, a Russian Orthodox cathedral with striking onion domes that some Estonians view ambivalently as a 19th-century imperial imposition. Below it, the lower town was the merchant and guild district, centered on Town Hall Square, which has hosted a market in some form for over 800 years.

The city walls themselves, still substantially intact, are one of the more complete surviving fortification systems in Northern Europe. Several of the towers are open to climb, and walking a stretch of the wall walk gives a genuinely different vantage point on the Old Town than the ground-level streets do.

Kadriorg, a Baroque palace and surrounding park about a 20-minute walk from the Old Town, was built by Peter the Great for his wife Catherine after Russia took control of Estonia in the early 18th century — a reminder that Tallinn's history runs through Russian, Swedish, German, and Soviet control before Estonian independence, not a straight line.

Tallinn's position across the Gulf of Finland from Helsinki, a roughly two-hour ferry away, makes it a natural add-on for travelers already in Scandinavia, and it holds its own against pricier Nordic capitals on cost while offering an old town that few cities in the region can match for how completely it survives.