Former Location of Polish Daily Zgoda Newspaper

The ruins of an ancient fortification wall sit in front of and underneath this boutique hotel.

Preserved portions of Athens's ancient defenses are on display in a subterranean parking garage.

This exquisite example of early colonial architecture remains unfinished almost 500 years after construction began.

The surviving remnants of a destroyed medieval church now stand in a public park.

A mysterious ruin shrouded in more folklore than fact.

These ruins of Francis Bacon's once-magnificent manor are hidden in the English countryside.

A little-known park with unusual, half-ruined structures and a mystical energy.

The oldest surviving mosque in the UAE has mysterious origins and unusual architecture.