The antonyms for the phrase "lay in ruins" are "stand tall," "flourish," and "bloom." These words signify growth, strength, and vitality. The opposite of a ruined structure is a strong and sturdy one: a building that stands tall and proud, defying the forces of nature and time. "Flourish" implies a state of abundance and prosperity; a thriving community is one where people are productive, happy, and healthy. "Bloom" suggests growth and beauty, as in the case of a garden full of vibrant flowers. By using these antonyms, you can communicate a message of hope, growth, and renewal, and inspire others to look for the bright side of any situation.