Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

The only Bahá'í house of worship in North America and one of only a handful worldwide.

A speakeasy takes on Chicago's drinking culture.

Museum mostly in name, and only a restaurant depending on the day, this place could only exist in Marfa.

A vortex fountain that seems to rise out of the ground.

A beautiful but toxic fountain of mercury.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

World's only nuclear reactor operated by liberal arts undergraduates.

An isolated dive site teeming with cnidarians.

The world's brightest bioluminescent bay.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

Ride the subways of yesteryear.

A living archive of urban activism and space reclaimed.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

Two thousand artifacts from around the world collected by one woman who loved to travel.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

First known as the "Sample House," this construction mash-up was meant to be a living catalogue of building styles.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

This nearly endless university hallway is home to a unique sunset known as "MIThenge."

A museum dedicated to the exploring past, present, and future innovations.

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

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

A semi-scholarly approach to sex.

A 30-acre garden inspired by the principles of modern physics.