The End of Time isn't really an era in Chrono Trigger, but is an important place that deserves mentioning nonetheless. The End of Time is a mysterious place where time seems to stand still.
Considered to be the space-time co-ordiantes of least resistance, all lost travellers in the Sea of Time end up here. In theory, if three or more people step into a time portal (or Gate), they will end up at the End of Time.
The End of Time is a desolate place. Its only inhabitants are Gaspar, the Guru of Time orginally from the Kingdom of Zeal, as well as Spekkio, the odd Master of War.
For more on the characters from the End of Time, namely Spekkio, click here.