A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

A 19th-century politician who died after walking home in a blizzard is honored with this Manhattan statue.

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

A semi-scholarly approach to sex.

This Fifth Avenue church has long been the favored worshiping place of Broadway actors and vaudeville performers.

Ship skeletons haunt Baltimore's waterways.

This humble historic facade hides a history of boozing and the gentlemanly sport of rat-fighting.

Built just after the American Revolution, the oldest row house in New York City still stands in Chinatown.

This memorial honors thousands of enslaved Africans and their descendants who died in colonial New York.

During the 19th century, you could pay for violence off a prix fixe menu on this Manhattan street.

Revolutionary War casualties fill the only 17th century structure remaining in Manhattan.

Imagine having a street run right through your home, or better yet, a historic bridge three stories high.

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

Avoid gangster interaction while window-shopping.

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

Order scoops of pandan, lychee, and black sesame at this family-run institution.

Try not to get slimed in Tribeca.

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

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

Home of the golf club used by Alan Shepard on the moon, and more artifacts from the sport's history.

This mom-and-pop Japanese sweets shop has been serving cloud-light mochi for almost a century.

A 1940's shrine dedicated to drowned fishermen on the outskirts of Honolulu.

A unique set of caves that spits waves back out into the ocean.