A spooky and decrepit mental health facility is slowly being replaced with newer digs.

This little-known rival to the Library of Congress houses one of the largest collections of pre-1876 American books, newspapers, and manuscripts.

The idyllic colonial home of the artist behind the famous portraits of George Washington and Thomas Jefferson.

One car at a time please.

This rare polygonal meeting house is rumored to be built in a circle so that the devil has nowhere to hide.

A historic Montreal market that was the city's agricultural hub for over century.

Canada's largest graveyard boasts a lot of noteworthy artifacts as well as its own computerized mapping service.

City law dictates that this mountaintop cathedral containing the heart of a saint is to remain the tallest building in town.

This 17th-century house was once the trading hub for two prominent Canadian fur barons.

This exuberantly curated landscape is one of the largest sculpture gardens in Canada.

All the anchors found in this park were taken from the nearby river.

This tiny little island has, as the name says, just enough room for its single house.

A castle built for love, and abandoned due to heartbreak.

Three gardens with toilets and urinals filled with bright flowers started as a protest against zoning rules.

It wouldn't be long after purchasing this farm, Brown would lead his siege on Harper's Ferry.

This sandstone gorge in New York State's Adirondack Mountains is home to waterfalls, flumes, and more.

A monument to the military service of America's greatest traitor refuses to even name him.

Eight whimsical acres of metal art.

A steeple in the shape of a golden hand pointing straight up commemorates Zebulun Butler, the first full-time pastor of this Mississippi church.

An eerie and beautiful group of columns mark the site of a grand mansion lost to time and fire.

The childhood home of the legendary blues guitarist and singer.

The second-largest ceremonial mound in the United States is an artificial hill that is loosely shaped like a pentagon.

This monument to the victims of a tragic explosion is said to turn and look at passing cars.

A grandiose octagonal home crowned by a large dome stands out among the antebellum mansions.