Blasieholmen is the small central peninsula where Stockholm keeps its grandest institutions — the national gallery, the grand hotel, a row of 19th-century palaces — all facing the water and the royal palace across it. Two and a half kilometres, a flat loop, the most concentrated stretch of monumental Stockholm you can walk in an hour.
Start at Kungsträdgården and walk east through the park to the water. The Grand Hôtel comes first, opened 1874, where the Nobel laureates still stay. Past it is Strömkajen, the quay where the white archipelago boats line up bow-to-water — stand a while; the boats are the show.
Then the Nationalmuseum, the national gallery in its 1866 palazzo, reopened in 2018 after a long refit and free to enter; give it an hour for the Swedish 18th century and the design rooms. Behind it, the peninsula's quiet palace streets, where the city's old money lived.
Close at the Raoul Wallenberg memorial near Nybroplan — a sober note — then loop back through the park to the station.

