A Jenga-style cylindrical tower of books that appears to go on forever.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Walk through Czech history in Prague's largest graveyard.

Countless grotesque faces stare out from this eerie Prague art wall.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

A stunning mosque owes its design to an Ottoman ruler nicknamed "the Butcher."

This synagogue is covered in beautiful mosaics that explore the history of the Jewish people.

Underwater restaurant at the coral reefs of Eilat.

An elegant garden commemorating the 1841 visit from apostle and missionary, Orson Hyde.

A geometric jumble of homes.

An iconic view point of the Sea of Galilee offers a look into Israel's past.

An ancient tunnel in Jerusalem built to redirect water in the event of a siege is one of history’s great architectural innovations.

A magical oasis in the middle of the Negev Desert.

Squeezing inside this deep, narrow canyon reveals a festival of desert colors.

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

A serene desert oasis speckled with ancient artifacts.

Hidden out of public view in the National Library of Israel is a collection of "Stalag's," 1960s Nazi themed porno paperbacks written and consumed by Israelis.

An ancient quarry rediscovered by a dog and claimed by biblical kings, a German cult, and the Freemasons.

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

A 2,000-year-old wine press hidden in an overlooked park in Tel Aviv.

Descend 2,030 years into the past in an ancient tunnel built to support Jerusalem's most famous wall.

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

The bluer than blue waters in these natural Israeli caves are reached via the world's steepest cable car.

These numerous Israeli caves were dug out over hundreds years for reasons ranging from hideouts to burial sites.