Synonyms for Ruins:

n.

buildings that are dilapidated (noun)
residue, remnants, rubble, wreck, relics, traces, detritus, debris, wreckage, vestiges.
losses (noun)
divestitures, forfeitures, debits, dispossessions, erosions, expropriations, privations, setbacks, depletions, decrements, decreases, deprivations, losses, Penalties.
remains (noun)
wreckage.
ruins (noun)
breakdowns, collisions, wrecks, debacles, landslides, shipwrecks, wreckages, failures, apocalypses.

v.

damages (verb)
spoils, damages, mars, wreaks havoc, vandalizes, pillages, ransacks, ravages, rends, lays waste, wastes, depredates, despoils.
remains (verb)
wreckage.

Other synonyms:

wreck. rubble
debris.
Other relevant words:
rubble, vestiges, remnants, walls, wreckage, detritus, residue, relics, Foundations, traces, debris, wreck.

Usage examples for ruins

  1. In the meantime Isabel and Silverbridge were among the ruins together. – The Duke's Children by Anthony Trollope
  2. Do you mean up among those ruins – Benita, An African Romance by H. Rider Haggard
  3. Only tell me why you have come to- day to call me back to the ruins of a heaven wrecked by your own hands? – The Fugitive by Rabindranath Tagore