Gdansk in 3 days: Long Market Długi Targ (most magnificently gabled single Polish merchant-house square — Neptune Fountain 1633 — Golden Gate 1612 — Green Gate 1568), Gdansk Crane Żuraw (most precisely 14th-15th century wooden-tread-wheel-powered single European medieval port crane — 2,000kg lifting capacity — tread-wheel workers like human hamster wheels), St. Mary's Church (world's largest brick Gothic church — 27,000 capacity — astronomical clock 1464-1470), Mariacka Street amber shops (Baltic amber 30-50 million year old Eocene fossilized resin — insects in amber), Goldwasser gold-flake liqueur (invented Gdansk/Danzig 1598 — world's original gold-leaf-infused spirit), Westerplatte (September 1 1939 4:47am first shots of WWII — 182 Polish defenders held 7 days), European Solidarity Centre 2014 (August 31 1980 21 Demands Solidarity agreement — Lech Walesa — most important single Eastern Bloc workers' document), Gdansk Shipyard Gate 2 (Three Crosses Monument 1980), Museum of WWII 2017 (largest Polish WWII museum — partially underground), Malbork Castle (50km — world's largest castle by land area 52 hectares — Teutonic Knights 13th-14th century — UNESCO 1997), farewell Goldwasser + Baltic herring.