architecture
attraction
banknote
belgrade
beograd
blue
building
center
croatia
current
education
electric
electrical
electricity
energy
engineer
europe
european
famous
genius
history
inventor
landmark
legend
monument
museum
nikola
observation
people
person
physician
physics
pioneer
power
radio
science
scientist
sculpture
serb
serbia
serbian
study
technology
tesla
yugoslavia
yugoslavian