La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

Volunteer-run library dedicated to exploring five decades of activism history.

Abandoned power station once home to a squatter community, now being developed into an arts center.

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

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

A curious friendship between two inanimate ladies.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

A dilapidated dock tells the story of Titanic's missed arrival.

Four cars from the old system were once on display, but were removed in 2014.

A world-class collection of mechanical musical instruments and automata.

Do these monsters look familiar? The gargoyles on this church are all from pop culture.

The sculptural remains of the last home of a legendary Dada artist.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The site of one of history's most indelible and horrific tragedies.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."