Rotherbaum is a quarter of Eimsbüttel, a borough of Hamburg, Germany. In 2020 the population was 17,114.
In German, "roter Baum" means red tree. The "th", which in general was abolished in the spelling reform of 1900, was preserved in names. Depending on grammatical context, it might also be spelled with n as Rothenbaum.
Wikipedia https://en.wikipedia.org/wiki/Rotherbaum
Coordinates 53°34'6.263" N 9°59'14.754" E