Gotland is Sweden's main holiday island, a place of ancient history, a relaxed summer-party vibe, wide sandy beaches, and wild cliff formations called raukar (the remnants of reefs formed more than 400 million years ago). Measuring 125 km (78 miles) long and 52 km (32 miles) at its widest point, Gotland is where Swedish sheep farming has its home. In its charming glades, 35 varieties of wild orchids thrive, attracting botanists from all over the world.

Rīga has an upscale, big-city feel unmatched in the region. The capital (almost as large as Tallinn and Vilnius combined) is the business center of the area while original, high-quality restaurants and hotels have earned Rīga some bragging rights among its Western European counterparts. The city also doesn't lack for beauty—Rīga's Old Town (now a UNESCO World Heritage site) is one of Europe’s most striking examples of the art nouveau architectural style. Long avenues of complex and sometimes whimsical Jugendstil facades hint at Rīga's grand past. Many were designed by Mikhail Eisenstein, the father of Soviet director Sergei. This style dominates the city center. In many ways, the wonder of Rīga resides less in its individual attractions and more in the fabric of the town itself. In the medieval Old Town, an ornate gable or architrave catches the eye at every turn. The somber and the flamboyant are both represented in this quarter's 1,000 years of architectural history. Don't hesitate to just follow where your desire leads—the Old Town is compact and bounded by canals, so it's difficult to get totally lost. When the Old Town eventually became too crowded, the city burst out into the newer inner suburbs. The rich could afford to leave and build themselves fine fashionable mansions in the style of the day; consequently, city planners created a whole new Rīga. Across the narrow canal, you'll find the Esplanāde, a vast expanse of parkland with formal gardens and period mansions where the well-heeled stroll and play. Surrounding this is the art nouveau district. Encompassing avenues of splendid family homes (now spruced up in the postcommunist era), the collection has been praised by UNESCO as Europe's finest in the art nouveau style. The best examples are at Alberta 2, 2a, 4, 6, 8, and 13; Elizabetes 10b; and Strēlnieku 4a. If the weather permits, eschew public transport and stroll between the two districts, taking in the varied skylines and multifaceted facades, and perhaps stopping at a café or two as you go. The city has churches in five Christian denominations and more than 50 museums, many of which cater to eclectic or specialist tastes.

Estonia's history is sprinkled liberally with long stretches of foreign domination, beginning in 1219 with the Danes, followed without interruption by the Germans, Swedes, and Russians. Only after World War I, with Russia in revolutionary wreckage, was Estonia able to declare its independence. Shortly before World War II, in 1940, that independence was usurped by the Soviets, who—save for a brief three-year occupation by Hitler's Nazis—proceeded to suppress all forms of national Estonian pride for the next 50 years. Estonia finally regained independence in 1991. In the early 1990s, Estonia's own Riigikogu (Parliament), not some other nation's puppet ruler, handed down from the Upper City reforms that forced Estonia to blaze its post-Soviet trail to the European Union. Estonia has been a member of the EU since 2004, and in 2011, the country and its growing economy joined the Eurozone. Tallinn was also named the European City of Culture in 2011, cementing its growing reputation as a cultural hot spot.

A city of the sea, Helsinki was built along a series of oddly shaped peninsulas and islands jutting into the Baltic coast along the Gulf of Finland. Streets and avenues curve around bays, bridges reach to nearby islands, and ferries ply among offshore islands.Having grown dramatically since World War II, Helsinki now absorbs more than one-tenth of the Finnish population. The metro area covers 764 square km (474 square miles) and 315 islands. Most sights, hotels, and restaurants cluster on one peninsula, forming a compact central hub. The greater Helsinki metropolitan area, which includes Espoo and Vantaa, has a total population of more than a million people.Helsinki is a relatively young city compared with other European capitals. In the 16th century, King Gustav Vasa of Sweden decided to woo trade from the Estonian city of Tallinn and thus challenge the Hanseatic League's monopoly on Baltic trade. Accordingly, he commanded the people of four Finnish towns to pack up their belongings and relocate to the rapids on the River Vantaa. The new town, founded on June 12, 1550, was named Helsinki.For three centuries, Helsinki (Helsingfors in Swedish) had its ups and downs as a trading town. Turku, to the west, remained Finland's capital and intellectual center. However, Helsinki's fortunes improved when Finland fell under Russian rule as an autonomous grand duchy. Czar Alexander I wanted Finland's political center closer to Russia and, in 1812, selected Helsinki as the new capital. Shortly afterward, Turku suffered a disastrous fire, forcing the university to move to Helsinki. The town's future was secure.Just before the czar's proclamation, a fire destroyed many of Helsinki's traditional wooden structures, precipitating the construction of new buildings suitable for a nation's capital. The German-born architect Carl Ludvig Engel was commissioned to rebuild the city, and as a result, Helsinki has some of the purest neoclassical architecture in the world. Add to this foundation the influence of Stockholm and St. Petersburg with the local inspiration of 20th-century Finnish design, and the result is a European capital city that is as architecturally eye-catching as it is distinct from other Scandinavian capitals. You are bound to discover endless engaging details—a grimacing gargoyle; a foursome of males supporting a balcony's weight on their shoulders; a building painted in striking colors with contrasting flowers in the windows. The city's 400 or so parks make it particularly inviting in summer.Today, Helsinki is still a meeting point of eastern and western Europe, which is reflected in its cosmopolitan image, the influx of Russians and Estonians, and generally multilingual population. Outdoor summer bars ("terrassit" as the locals call them) and cafés in the city center are perfect for people watching on a summer afternoon.