Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

Giant marble phalluses on the sacred island of antiquity.

The biggest solar telescope in the world helps reveal the secrets of our sun.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

An Ethiopian "Jerusalem" featuring a church hewn out of a single rock.

A volcanic landmark located on an Ice age lake bed.

A condom-covered Thai restaurant that is more concerned with birth control than food.

A city continually buried under the ash of a volcano that has been erupting for more than 15 years.

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

A modern mechanical planetary system, part of a 10,000 year clock.

This South London cemetery holds the remains of more than 15,000 people.

Inside a former cabaret, seven floors of erotic art.

Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

Remember that scene in the Matrix, when Neo is in the big white room with all the weapons flying by? Well, this is what it would look like if he had wanted trees instead of guns.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

Its buzzing collection honors vibrator history.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

Enormous pendulum helps keep Taiwan's tallest building from swaying.

The first museum in the world devoted to sexual gadgetry.

Must form and function forever remain at odds? Not if the Florida Department of Transportation has its way.

How did a French journalist’s grave become the sexiest statue in the cemetery?

A priceless collection of the Nation's cryptologic history.

The world's first permanently occupied mountain-top observatory continues to report on the stars.