The 28-foot granite map plots the locations of 40 theaters in New York City.

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

Worker-owned cooperative and resource for those looking to lighten their ecological footprint.

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

An vast warehouse of everyday treasures in Berkeley, CA.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

A promotional sun clock on the site of San Francisco's great raceway.

Tiki luxury on Nob Hill.

A crumbling staircase in upper Manhattan is all that remains of one of the most important sites in sports history.

There must be a pun in this haystack somewhere...

A Manhattan Episcopal church with an eerie underground crypt.

Commemorating the spot where the famous scientist fed his pigeons.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

A very classy 1920s-era bar right in Grand Central Station.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

A bit of retro transportation flair preserved in the world's largest department store.

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

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Elevated freight railway turned wildly successful urban park.

Try not to get slimed in Tribeca.