3455 GERMANY (Hamburg) - Rickmer Rickmers

Rickmer Rickmers is a three masted barque permanently moored as a museum ship in Hamburg, near the Cap San Diego steamer, also a museum ship. After almost 90 years of sailing the seven seas, the ship was turned into a museum in 1983. Today, visitors can roam the decks, exploring the crew's and officers' quarters, the galley and even the engine room (this windjammer was powered by wind and, if required,  by steam and diesel engines). The hull is 97 meters long, 12.20 meters wide, the depth was 6 meters.

3301 GERMANY (Hamburg) - Free and Hanseatic City of Hamburg

Hamburg is the second-largest city in Germany after Berlin, 8th largest city in the European Union with a population of over 1.84 million, and also Europe's third-largest port. Located on the River Elbe at its confluence with the Alster and Bille, it is at a sheltered natural harbour on the southern fanning-out of the Jutland Peninsula, between Continental Europe to the south and Scandinavia to the north, with the North Sea to the west and the Baltic Sea to the northeast. The name Hamburg comes from the first permanent building on the site, a castle which the Emperor Charlemagne ordered constructed in AD 808.

3242 GERMANY (Hamburg) - Elbphilharmonie

Located on the Grasbrook peninsula of the Elbe River, the Elbphilharmonie (Elbe Philharmonic Hall) is one of the largest and most acoustically advanced concert halls in the world, inaugurated on 11 January 2017. The new glassy construction resembles a hoisted sail, water wave or quartz crystal, and was designed by architecture firm Herzog & de Meuron. It is the tallest inhabited building in Hamburg, with a final height of 108m. The original 1966 brick façade of the Kaispeicher A, formerly a warehouse, was retained at the base of the building.

2955 GERMANY (Hamburg) - Reeperbahn

The Reeperbahn (which means ropewalk) is a street and entertainment district in Hamburg's St. Pauli district, one of the two centres of Hamburg's nightlife (with Schanze) and also the city's major red-light district. In German it is also called die sündigste Meile (the most sinful mile) and nicknamed Kiez. The street is lined with restaurants, night clubs, discotheques and bars, but also strip clubs, sex shops, brothels, a sex museum and similar businesses, including the Operettenhaus. Because of the problems with prostitution and the high crime rate, in 2007 the Senate of Hamburg enacted a ban on weapons in the Reeperbahn area.

2001 GERMANY (Hamburg) - Krameramtsstuben

The Krameramtsstuben (Grocers' Apartments) are historic buildings on Krayenkamp, near St. Michaelis Church in the Neustadt district, at the time just included within the fortified ramparts of Hamburg. Formerly homes for widows of members of the Grocers’ Institute (Krameramtswohnungen), the 1620 to 1700 built, timber-framed buildings form the last of the 17th century enclosed courtyards of Hamburg.

0926 GERMANY (Hamburg) - Speicherstadt and Chilehaus with Kontorhaus District - Chilehaus (UNESCO WHS)

The Hamburg Kontorhaus District is an office district (the first in Europe) built to serve the functions arising from creation of the Speicherstadt (warehouse district - the largest timber-pile founded warehouse district in the world, built between 1883 and 1927). It forming one of the most impressive German urban settings of the 1920s, and is characterised by a high degree of stylistic consistency. The foremost of these buildings is the ten-story office building named Chilehaus, built by Fritz Höger in 1922-1924, a masterpiece of German Brick Expressionism.

0690 GERMANY (Hamburg) - Gutenberghaus in Harburg

Between 12th century, when was first mentioned, and the first half of the 20th century, Harburg (Harburg upon Elbe since the 19th century) was a town in its own right. In 1937 it was incorporated into the city of Hamburg, now being a borough of the city, and a quarter in this borough. The borough Harburg lies on the southern shores of the river Elbe and covers parts of the port of Hamburg, residential and rural areas and some research institutes. In the postcard is the Gutenberg house, situated on the corner of the streets Julius Ludowieg and Harburg Rathaus. More I couldn't find about this building.