Herbert traveled across Germany, and then stayed longer in France (June 1966 – September 1967). He then went back to Germany, visiting the Netherlands and Belgium. On 29 March 1968, he married Katarzyna Dzieduszycka at a Polish consulate in France. At the end of April, the Herberts returned to Berlin. In the summer of 1968, Herbert visited the US (invited by the Poetry Center). He went to New York, California, The Grand Canyon, New Mexico, New Orleans, Washington, D.C. and Los Angeles. At that time, the translation of his works was published in the U.S., which made Herbert one of the most popular contemporary poets in English literary circles. While traveling across the country, he gave several talks in New York, Berkeley and Los Angeles. After visiting the U.S., Herbert went back to Berlin, where he lived until September 1970 (with some short breaks to Poland and a holiday in Italy). In 1969, he took part in "Dei Duo Mundi" – The Festival of Two Worlds. From September 1970 to June 1971, the Herberts again stayed in the U.S., where the poet gave lectures as a visiting professor at California State University, Los Angeles.