EntityQ321789· pop 30· linked from 50 articlesEinstein TowerSign in to saveastrophysical observatory in Potsdam, GermanyConnectionsEinstein familyEntitytheory of relativityEntityLeibniz Institute for Astrophysics PotsdamEntityGermanyCountryAlbert EinsteinPersongeographic coordinate systemEntityInternational Standard Book NumberEntityPotsdamEntityeinsteiniumEntityTenerifeEntitygeneral relativityEntityspecial relativityEntityWayback MachineEntityastrophysicsEntitycementEntityastronomerEntityInternational Astronomical UnionEntityphotoelectric effectEntityredshiftEntitymass–energy equivalenceEntityCategoriesArt Nouveau architecture in GermanyAstronomical observatories in GermanyBuildings and structures completed in 1921Buildings and structures in PotsdamErich Mendelsohn buildingsExpressionist architectureModernist architecture in GermanySolar telescopesTourist attractions in PotsdamTowers in Germany