Most people give Estonia a day — a cruise-ship sprint around Tallinn's turrets — and leave convinced they've seen it. They've seen the postcard. The country's actual character lives in its bogs, its islands, and a university town that might have the best café culture per capita in Europe. A week is enough, buses are cheap and have wifi that actually works, and in summer the light barely leaves.
Tallinn: two days
Yes, the old town is touristy, and yes, it's still wonderful — a complete medieval merchant city with towers named things like Fat Margaret. Do it early morning or after 6pm when the day-trippers evaporate. Then spend your second day where Tallinn actually happens: the Telliskivi Creative City and Balti Jaam market (smoked fish, antique Soviet junk, $4 lunches), the wooden houses of Kalamaja, and a swim off the Pirita beach if it's July. Dorms run €18–25; the Baltic ferry from Helsinki, if you're arriving that way, is about €25 and takes two hours.
Lahemaa: bears, bogs and manor houses
An hour east of Tallinn (bus toward Võsu, €3–5), Lahemaa National Park is the easy wilderness. Base in Võsu or the village of Palmse with its restored baroque manor. The essential experience is the Viru bog boardwalk: a 3.5km loop across a landscape of dwarf pines, black pools and reindeer moss that feels ancient because it is — the peat under your feet has been accumulating since the ice left. Go at 5am in summer if you can drag yourself up; mist sits on the bog pools and you'll have it alone. Rent a bike locally to link the boardwalk with the sea-captain villages of Käsmu and Altja, where tarred wooden fishing sheds line the stones. Guesthouses run €35–50 a double; wild camping is legal in designated RMK sites, which are free and have firewood. Firewood. Free. Estonia is civilized.
Tartu: the soul of the country
Three hours south by Lux Express bus (€8–12, seatback screens, free coffee), Tartu is Estonia's university town and its self-declared intellectual capital. It's compact and slightly scruffy in a lovable way: the leaning Art Nouveau buildings of the old town, students sprawled on Toome Hill among cathedral ruins, and the Estonian National Museum — a kilometer-long shard of glass on an old Soviet airfield — which is worth three hours of anyone's life (€14). At night, find the Aparaaditehas factory district for craft beer at €4–5 and the kind of bar where someone is always arguing about poetry or startups, often both.
Pärnu and the road west
Two hours west (€7), Pärnu is the summer capital: a long shallow beach, mud-bath spas from the 1920s, and an unhurried grid of wooden villas. Out of season it's a ghost town in the best Nordic way. It's also the logical hinge for the islands.
Saaremaa: the island that time forgot on purpose
Buses from Pärnu (or direct from Tallinn) roll onto the Virtsu–Kuivastu ferry, cross to Muhu island, hop the causeway, and land you in Kuressaare in about three hours total (€10–13, ferry included). Saaremaa is windmills, juniper heath, thatched roofs and an intact 14th-century bishop's castle with a genuinely great museum. Rent a bike or a cheap car and do the loop: the Angla windmill hill, the Kaali meteorite crater — a perfectly round green pond punched into the earth around 1500 BC — and the Sõrve peninsula lighthouse at the island's wind-scoured tip. Locals will tell you Saaremaa people are their own nation. After two days you'll agree.
When to go
June to August for swimming and white nights; September for mushrooms and empty boardwalks. Everything is bookable online, everyone under 50 speaks English, and card payment works in places that don't have running water. Budget €45–60 a day.