Gerald sent me a Thank You Card for the Andorra card I sent him on my vacation.
Kiel is the capital and most populous city in the northern German state of Schleswig-Holstein, with a population of 238,049 (2010).
Due to its geographic location in the north of Germany, Kiel has become one of the major maritime centres of Germany. The city is known for a variety of international sailing events, including the annual Kiel Week, which is the biggest sailing event in the world. The Olympic sailing competitions of the 1936 and the 1972 Summer Olympics were held in Kiel. (source)
Thank you Gerald!