Original: The famed zeppelin Hindenburg that was destroyed by fire in 1937 was named in his honor, as was the Hindenburgdamm, a causeway joining the island of Sylt to mainland Schleswig-Holstein that was built during his time in office.
Simplified: The famous zeppelin Hindenburg that was destroyed by fire in 1937 had been named in his honor, as is the causeway joining the island of Sylt to mainland Schleswig-Holstein, the Hindenburgdamm, built during his time in office.