Hegedus Gyula Street Synagogue was built in 1911 to designs by Bela Vajda and later enlarged in the 1920s by Leopold Baumhorn, one of Hungary's best-known synagogue architects. Its value is mostly architectural, as part of the Jewish heritage of Ujlipotvaros and northern Pest.
It is a worthwhile look if you are already walking the district around Margaret Bridge. Check access before making a special trip, since active religious buildings are not always open for casual visits.