There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

The United States Capitol's former columns still stand.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

The middle finger of modernity.

Once the largest trading firm of enslaved people in the U.S., this building is now a museum that preserves Alexandria's dark past.

This small pedestal marks the spot of the first lot of land sold in Alexandria, Virginia in 1749.

This cannon dating to 1755 has stood guard at this suburban intersection since 1915.

A century-old magnolia tree is the only living landmark tree in New York City.

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

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.

This mysterious marker puzzles pedestrians and infuriates geographers.

This slender three-story building has also had several famous residents.

Even for Egyptian royalty, the afterlife was bring-your-own-beef.

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

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

One of Canada's oldest museums, the beautiful Redpath has been serving up Natural History and Ethnography since 1882.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

A semi-abandoned replica of Prince Edward Island's Avonlea—in Japan.

An old California photo stand has been turned into a shrine to the cozy art of crochet.

Time travel with sweets across history at this research-based candy store.

This graceful little figure is a one-of-a-kind version of the cherished character.

Spies, love letters, and ghost stories have all left their mark on this home-cum-museum.

An abandoned Gold Coast-era mansion once intended for the exiled ruler of Albania, who never arrived.