The location of the Adamant needed for Excalibur is in the tower in the sky -- you need the chime and the cube. Go in the tower and continue to the place with eight ways to travel. Go in the bottom left diagonal and fight the enemy that guards it. Open the treasure chest to get the Adamant.
Find the three tombs located next to the white magic shop in Elfland. The tombstone farthest to the left reads:
"Here lies Erdrick"
This is a direct reference to a character in the game Dragon Warrior.
Northeast of the port town of Provaka is a two space wide peninsula with enemies from the Northern Continent. They offer a lot experience and are difficult to defeat unless you are around levels 12 or 13.
Acquire the ship from the pirates. Board the ship, and repeatedly press X + Circle fifty five times. A number-sliding game will appear. Complete this as fast as possible. If you finish under two minutes, you will receove 10,000 gil. Finish under four minutes for 5,000 gil, and under six minutes for 2,000 gil.
In the first castle entered in the game, Castle Coneria, above Queen Jane's room is what appears to be a room with no one inside. Search around the room a bit, however, and you will realize that you can talk to someone although they are not there. After you rescue the princess, the message will change.
Instead Of It Saying Edrick It Says
"May Link Rest In Peace"
Link Is The Hero Of The Zelda Series
Go to Bahamut's cave. Once you first enter, go to the bottom left part. The Zeus Glove will appear in the items screen if you are lucky -- There is a 1/300 chance of finding it.