This ultra-modern home clings to the slope of the Hollywood Hills on a precarious stilt.

A common entry point to the Griffith Observatory trail holds its own wonders.

A one-ton statue of Steve Rogers beautifies the entry to a Brooklyn Bed, Bath & Beyond.

19th century cemetery hidden in Brooklyn's Prospect Park.

A no-frills cinephile haven known for showing offbeat, underseen films.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

This storied music venue was once a tavern that housed an Italian Anarchist book club and prohibition parties; today it's a community space for artists and musicians.

The oldest certified bowling alley in the United States is in the basement of this century-old bar.

An off-the-beaten-path place to literally hang beneath Milwaukee's Holton Street Bridge.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Love is in the air along the small street in Brooklyn.

A 9-story, poured concrete structure which was used as a glue factory with an indelible smell.

This preserved wilderness hides the remains of a colonial grain mill used to feed George Washington's troops.

This old estate is a remnant of when the Bronx was a popular summer destination for wealthy New Yorkers.

Final resting place of Typhoid Mary.

One of the few Glatt kosher delis in the United States is a cornerstone of its Hasidic neighborhood.

A mass grave for victims of one of the city’s worst fires.

The cuisine at this Sheepshead Bay spot tells the story of a displaced Muslim Chinese community.

A monument stands to the famous suffragist who penned the declaration for women's equal rights, including the right to vote.

Come for the waffles, stay for more waffles.

A working monastery hidden away in Brooklyn once abutted the location of a former inebriate's home.

This recipe is set in stone.

Small monoliths of several varieties of stone sit alongside a wooded path in the Bronx.

Those belting out show tunes might not realize this piano bar marks the site where Thomas Paine died in 1809.