In a tribute to Hamburg’s longstanding relationship with the sea, ten floors of a formidable old red-brick neo-Gothic warehouse near the waterfront in HafenCity are stacked chockablock with all things nautical. The vast spaces are literally crammed with memorabilia, and eclectic holdings run the nautical gamut from a 3,000-year-old dugout unearthed on the banks of the Elbe to 47 letters of Lord Horatio Nelson, hero of the Battle of Trafalgar, to photographs and drawings of ships to uniforms and navigation equipment. If the 15,000 menus from ocean liners seem overwhelming, wait until you get to the top floor and come across the 26,000 model ships, stacked tightly side by side in row after row of glass cases as if they were moored in the world’s most impossibly crowded harbor. (If this quirkily exhaustive collection whets your appetite to stock up on some maritime memorabilia, make your way across town to St. Pauli, where the Captain’s Cabin, Bei Dim St. Pauli Landungsbrücken 3 [[tel] 040/316373;; S-Bahn: Landungsbrücken], sells ship models, telescopes, barometers, figureheads, lamps, nautical clothing for the whole family, prints, posters, and more.)