This vacant church in the Financial District was once the heart of New York's first Syrian immigrant community.

Manhattan's Thirteenth Avenue was made on landfill then deliberately destroyed — apart from one small, obscure block.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

The remains of the furnace and iron works that produced the massive Hudson River Chain still stand in the woods of New York.

A historic covered bridge is but one example of an oddly prevalent American urban legend.

This stone tower marks a lookout point over the historic Washington Crossing, and maybe some buried treasure.

Seven people are buried in the middle of what's now a movie theater parking lot.

The final resting place of a famous 19th-century murder victim whose identity is still a mystery.

Six peaceful acres in a residential neighborhood dedicated to art and peace.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

New Jersey's last historic covered bridge was rebuilt from pieces of the original 19th-century structure.

Whimsical artist house in the New Jersey woods.

Tucked behind New Jersey's abandoned Gingerbread Castle lie the eerie ruins of a once-flourishing paper mill.

Once the world's largest reinforced concrete structure, this abandoned bridge now beckons urban explorers.

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

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

Collect holy water from a Bronx grotto.

This iconic tattoo shop has its own onsite museum with artifacts from the early history of modern body art.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

At this hidden studio, the dying art of taxidermy is alive and well.

A dark, dank room in subterranean Manhattan was the site of a ghastly murder.

The first and only carousel with a lineup entirely of insects.

A veritable variety of odds and ends.