London, the capital of England and the United Kingdom, is a 21st-century city with history stretching back to Roman times. At its centre stand the imposing Houses of Parliament, the iconic ‘Big Ben’ clock tower and Westminster Abbey, site of British monarch coronations. Across the Thames River, the London Eye observation wheel provides panoramic views of the South Bank cultural complex, and the entire city.

Copenhagen, Denmark’s capital, sits on the coastal islands of Zealand and Amager. It’s linked to Malmo in southern Sweden by the Öresund Bridge. Indre By, the city’s historic center, contains Frederiksstaden, an 18th-century rococo district, home to the royal family’s Amalienborg Palace. Nearby is Christiansborg Palace and the Renaissance-era Rosenborg Castle, surrounded by gardens and home to the crown jewels.

Stockholm, the capital of Sweden, encompasses 14 islands and more than 50 bridges on an extensive Baltic Sea archipelago. The cobblestone streets and ochre-colored buildings of Gamla Stan (the old town) are home to the 13th-century Storkyrkan Cathedral, the Kungliga Slottet Royal Palace and the Nobel Museum, which focuses on the Nobel Prize. Ferries and sightseeing boats shuttle passengers between the islands.

Helsinki, Finland’s southern capital, sits on a peninsula in the Gulf of Finland. Its central avenue, Mannerheimintie, is flanked by institutions including the National Museum, tracing Finnish history from the Stone Age to the present. Also on Mannerheimintie are the imposing Parliament House and Kiasma, a contemporary art museum. Ornate red-brick Uspenski Cathedral overlooks a harbor

Tallinn, Estonia’s capital on the Baltic Sea, is the country’s cultural hub. It retains its walled, cobblestoned Old Town, home to cafes and shops, as well as Kiek in de Kök, a 15th-century defensive tower. Its Gothic Town Hall, built in the 13th century and with a 64m-high tower, sits in historic Tallinn’s main square. St. Nicholas Church is a 13th-century landmark exhibiting ecclesiastical art.

London, the capital of England and the United Kingdom, is a 21st-century city with history stretching back to Roman times. At its centre stand the imposing Houses of Parliament, the iconic ‘Big Ben’ clock tower and Westminster Abbey, site of British monarch coronations. Across the Thames River, the London Eye observation wheel provides panoramic views of the South Bank cultural complex, and the entire city.