Known to English speaking visitors as "The Marble Temple," Wat Benchamabophit is both a place of great religious significance and a true architectural marvel. Its distinctive marble exterior, red and gold ceilings, and ornate lions standing guard give it an undeniably regal appeal, while Western influences such as stained glass windows stand in refreshingly stark contrast to some of Bangkok's older temples (by Bankok standards, a temple built in 1899 can still be considered a "new kid on the block").
While here you'll want to walk along the row of bronze Buddhas that line the temple square, and take a minute to reflect with the striking gold-on-blue Buddha inside the main "bot." It's truly a peaceful respite from the grind of the Thai capital, and the experience will usually be far less crowded then either the Grand Palace or Wat Pho. Enjoy.