A semi-scholarly approach to sex.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

Elevated freight railway turned wildly successful urban park.

New York's oldest magic store.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

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

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

A crumbling hospital from the 1850s on Roosevelt Island.

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

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

An old-timey wax exhibition campily depicting New Orleans legends and scandals.

This historic New Orleans cemetery is the final resting place of members of the Independent Order of Odd Fellows.

This colorful New Orleans bookstore features rare and used titles, with a specialty in Cajun fare.

Site of a former hidden treehouse in New Orleans.

One of the oldest continuously-operated gay bars in the United States is allegedly haunted by Truman Capote and Tennessee Williams.

The tallest monument in a historic New Orleans cemetery was prompted by romance and dash of pettiness.

This strange, small castle on the bayou has withstood the test of time and weather.

Once the site of a Native American harvest festival, this humble clearing later played an invaluable role in the birth of jazz.

This strange example of the Egyptian Revival architecture trend now holds Mardi Gras floats.

Before becoming a public park, this spot was a shell midden, a fort, and an amusement park.

The oldest operational cathedral in the U.S. has one shell of a way of projecting speakers' voices.