The Legend of Zelda: The Wind Waker/Hyrule Castle

Ancient Hyrule
As Link and the King of Red Lions descend through the portal, they enter a strange new world, completely frozen in time. Right in front of them is Hyrule Castle, the location of the true test. Upon arriving at the entrance to the castle, The King of Red Lions mentions an item is inside the castle for Link to obtain, and once he has it, all will become clear.

With those words of wisdom in your head, enter Hyrule Castle.

Forgotten History
As soon as you enter the castle, you'll see several Moblins and Darknuts appear to be wreaking havoc in it. Or at least they would be...

Apparently, every single one of them is frozen in time! In this state, they're just harmless statues of their former selves. As you investigate the mystery of the castle further, you'll see portraits of the forgotten King of Hyrule, and the ancestors of Tetra and the Pirate Crew. However, most noticable is the big statue of the Hero of Time, Link's very own ancestor.

The Sacred Seal
Now, there's the matter of getting the item in the castle. Head straight down to the grand hall of the castle until you come to a place in the middle with three triangular blocks. Right there, the King of Red Lions will mention a puzzle that opens the entrance to the castle's basement, sealed to keep out evil. He also mentions a clue about how to open it, namely a familiar set of three golden triangles.

In order to open the basement, you must take the three triangular blocks you see nearby and arrange them into the shape of the Triforce. They're a little strange to maneuver, but a few pushes and pulls will get them into place. When all three are in position, they will sink into the shape of the Triforce, which suddenly glows brightly. With the puzzle solved, the statue of the Hero of time slides back, revealing the entrance to the basement.

With the entrance open, go into the basement.

The Master Sword
Inside the basement, you will find a strange chapel, and receive another message from the King of Red Lions. He says to take the sword you see in front of you. It is the legendary Master Sword, the only weapon that can defeat Ganon. Head over to its pedestal and pull it out.