Church Court subsequently VechePe where will be built the royal court, Mircea the Elder built a fortress somewhere between 1386 to 1418. Citadel had brick walls and was surrounded by moat. 
In the fifteenth century, Vlad the Impaler, Prince of Romanian, strengthens the city built by Mircea the Elder and elevated to a royal residence, the alternative in Targoviste.
The first reliable data about Old Court documents we have from the time of Radu the Handsome, he moved his royal Bucharest.
Although for a time it was thought that the Royal Court was completely destroyed, excavations have revealed important ruins, including: caves, walls, towers, bases, steps, columns, rooms under construction in the nineteenth century. 
Researchers have determined that Old Court suffered various rebuilding and recovery along time since the second half of the fourteenth century to Vlad the Impaler, the Basarab the Young and by Mircea Shepherd, from Matei Basarab up Constantin Brâncoveanu.
According to archaeological traces preserved first identified city of Bucharest, a fortress located on the north bank of the Dâmboviţa. Situated on a small promontory, on an area of 160 square meters, built of brick fortress tower have a trapezoidal shape and was surrounded by a wide moat 1.50 to 2.20 m 
Since 1458 Braşov Vlad Tepes wrote asking them craftsmen in building cities. In a document dated August 10, 1460 Vlad Tepes reminds eg Fluvi Domboviche castro. According to these data and Dan Ion Ionaşcu Berindei thought this city was built between 1458-1459, a wooden construction with reinforcements of land, built somewhat in a hurry because the Ottoman danger. 
Although no conclusive evidence preserved, historians  found that the city built by Vlad Tepes between 1458-1459 was built on the old fortress on the banks of the Dâmboviţa. There are no known data on the importance of the city to defend the Romanian Country, the campaign of Mohammed II in 1462, but the fact is that the city had a defensive role.
On December 18, 1473 brother of Vlad the Impaler, Radu the Handsome, takes refuge in the city of Bucharest, called the Chronicle of Stephen the Great discovered Oligierd Gorka,” Fortress” Dâmboviţa.  After a siege that lasted several days, the city was conquered, after Radu the Handsome leaves fortification in the night. On November 24, 1473, Moldovans enter the city, and according to Gregory’s Chronicle Ear, Stephen acquired Citadel Dâmboviţei putting his hand on the abundance of Radu the Handsome even Voichiţa daughter. It ascends the royal throne Stephen Basarab Laiotă, but after a short period he worships sultan.
On November 11, 1476 Stephen the Great strikes again and conquered the city of Bucharest Vlad Tepes helping him return to the Lord. In this way, Stephen has paid the debt he had to Vlad the Impaler, to help the latter’s expulsion from Suceava Peter Aron, killer father Stephen.
In the next period Vlad Tepes wanting to resume the fight against Sultan writes Brasov asking for help in rebuilding the city of Bucharest. During this period the city was known under various names: Castrum Bokoryscha, Bocerestya, Bocoresth. 
After a few weeks of his reign Vlad Tepes falls victim to a plot hatched by pro-Ottoman boyars in Bucharest Ceatatea seat Basarab Laiotă climbing again. Neither the latter did not last too long, who succeeded the Basarab the Younger (1477-1482), nicknamed Ţepeluş.
Basarab the Young in all 5 years of the reign, as Vlad the Impaler appeal to craftsmen Brasov and Bucharest city rebuilds. According to the documents in this period the city suffers extensive renovations, so in some sources is even called the new city. Transforming the city during this period is attested by archaeological traces in Sun Street today.  Although in this period have survived a series of documents issued by the prince, just remember to rebuild the city, so the city information were not kept. According to a document from 1480, we learn that the city was named new chair city Bucharest and other documents issued by the magistrate Neagu Bokorestch Castro recalls. 
The main sources in finding some information about the court appearance of the latter period are archaeological finds. They have revealed the ruins of a fortress from river rocks and bricks, spread over an area of over 900 sqm. Excavations revealed and the ground floor of the castle, located in some basements and cellars very spacious and the courtyard of the palace stretched over an area of over 100 sqm. 
Although the history of many of the country’s rulers have chosen Romanian fortress Princely Court in Targoviste, some of them used as a fortress city Bucharest. This is the case of Vlad the Monk (1482-1495), who despite having Domească Court in Targoviste sign documents (have been preserved over 30 such documents) of the city of Bucharest. A proof for the above mentioned is a document issued in 1506, the beautiful seat of Bucharest.