The largest and most famous wax anatomical collection anywhere in the world.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Hear the quietest sound from across the dome.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

The celebrated eyesore created by starry-eyed sweethearts.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

The curiosities and wonders of pharmacy in a delightful historic building.

New York City's smallest piece of private property.

These azure waters were thought to lead to the Mayan Underworld.

Stroll through a wonderland of stupendous moss-covered trees.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

Elevated freight railway turned wildly successful urban park.

A walk through the historic city center, under the streets of Seattle.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

The greatest real estate coup of all time.

From scholastic to sepulchral - now under reconstruction.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Three-story slide through the New Museum.

During the 19th century, you could pay for violence off a prix fixe menu on this Manhattan street.

A terrific purveyor of natural history objects and curios.

Macabre astrological automaton clock dating to the late 1400s.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.