Edinburgh Castle, Stirling Castle, the awe-inspiring Border Abbeys and the Neolithic settlement of Skara Brae in Orkney are among the sites taking part.
The initiative aims to rekindle interest in Scotland's history and heritage ahead of the feast day of Scotland's patron saint St Andrew.
The free tickets will be valid on November 20 and December 1 and registration for the freebies is now open at www.ticketgiveaway.co.uk
Members of the public will have until 5pm on Thursday, November 28 to register online and apply for tickets to the attraction of their choice.
Here's a full list of historic locations partaking in the giveaway
St Andrews Castle and Cathedral
Dallas Dhu Historic Distillery
The Blackhouse Arnol
New Abbey Corn Mill