A massive, heart-shaped, wind-carved crater in the middle of the Israeli desert.

This amazing ancient cave was kept secret for seven years to protect it from the public.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

A series of three shiny letters mark the boundary of an old refuge for those being pursued by debt collectors.

The discovery of this Neolithic settlement, which contained a Stone Age "cathedral," threw archaeologists for a loop.

Ruins of a former government building destroyed during the Georgian-Abkhaz war in the wake of the fall of the Soviet Union.

A slice of central Asia in the middle of Berlin.

This restaurant combines two Finnish traditions in one place: warm-weather relaxation and outdoor carpet-cleaning.

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

This old Estonian mine has been kept like a sprawling time capsule of the local shale industry.

Serbia's master of striking memorials erected a forgotten, hidden gem in the hills outside a tiny village.

A historic cave in Scotland once served as a hiding place for a famous Covenanter.