Need for the Palisades in Both Temples: Tos. Shabbat 90a #6
King Solomon's plans for the walls of the First Temple: Rosh HaShanah 4a
Motivation of King Cyrus in building vulnerabilities into the walls of the Second Temple: Rosh HaShanah 4a
The relative height of the walls of the First and Second Temple: Bava Batra 3a-b
Herod re-built the Second Temple's walls with clear, white [and blue] marble, lined with lime. He wanted to add gold, but the Rabbis preferred the marine appearance: Succah 51b
Building interior walls of stone or of curtains: Bava Batra 3b