The grand Pomerania tour

Gdańsk's showpiece street — from the Upland Gate to the Green Gate.

A 14th-c. co-cathedral — an 82 m tower with a city-wide viewing terrace.

The Solidarity museum in a rust-clad block by Gate No. 2.

A 13th-c. Teutonic fortress — the largest castle in the world by area.

35 km of sand between the Baltic and the Bay of Puck.

A grey-seal sanctuary — 8 seals, with feedings at 11 a.m. and 2 p.m.

The Polish Sahara — dunes wandering up to 10 m a year.