Cetatea Fagarasului este locul din care, spune legenda, a plecat Negru Voda sa întemeieze Valahia, tara româneasca de la sud de Carpatii Meridionali.Initial a fost construita din lemn si pamant in jurul anilor 1310, de catre Ladislau Kan, voievod al Transilvaniei in acea perioada, membru al familiei de nobili unguri, Kan. Aceasta a fost apoi transformata treptat de catre voievodul Ladislau Apor (darama si reconstruieste cetatea, folosind piatra si atribuindu-i rol de aparare)si alti voievozi.
Fagaras Fortress is the most impressive monument of the town, and the core around which the town was actually built. Ladislaw Kan started to built it in 1310 on the former place of a 12th century wooden fortress strengthened by earthen walled fortifications. The former fortress had been burned down by the Tartars in 1241. The fort was enlarged and rebuilt in the 15th-17th centuries in the Transylvanian Renaissance style and came to be known, alongside with Deva, as one of the strongest fortifications in Transylvania.