The 30,000 impaled was actually Vlad's form of defense.

Those impaled Turks were a vanguard of an even larger Turkish force. A force that out-numbered Vlad's army. When the Turkish army came upon the impaled one, that army turned around out of fear. Wallachia was safe again.

The Turks conquered much of Eastern Europe but they never got Vlad's piece of it.

When I visited Budapest, the Reliquiry had a coin slot attached to it that turns a light on so you can actually see it. 20 forint for 1 minute.

At the main alter of the Basilica is also pieces of the leg bones of St Gellert as well!