Deep in the Negev Desert, the world's tallest solar tower looks like a sight straight out of science fiction.

Biblical beasts and endangered animal preservation come together in this Israeli zoo.

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

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

You can row a boat through this ancient underground reservoir.

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

Cold war icon and onetime "hole" in the iron curtain.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

Tiny memorials honor individual victims of the Holocaust.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

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

A "miracle" that seems to produce more holy fistfights than holy revelations.

The only quarter of the Old City not dedicated to a major world religion.

A monument celebrating the idea of reaching inaccessible places.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

In the early 1800s, surgery was also a show.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

There aren't too many operational funiculars around, but Pittsburgh has two!