The mansion home of author Edith Wharton.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

The "lovely red Vega" of the legendary record-settling pilot.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

The house where John Wilkes Booth conspired with his co-conspirators.

A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

A goddess-topped water fountain in Chicago was created thanks to the dreams of a thirsty newsboy.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

This historic hotel invented the chocolate brownie.

The remains of a 19th century spring, and the site of an infamous unsolved murder.

A bronze plaque at an intersection in Hoboken marks the place where the game of baseball first took shape.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.

This New Orleans statue of a portly figure in a goofy hat pays homage to a classic of satirical literature.

A massive Montreal stadium that has seen nothing but trouble since its inception.

The entire length of the border is marked by a 20-foot-wide slash through the trees.

This former prison now houses a lovely library devoted to Quebec's oft-maligned English-speaking history.

This steep cable railway has been hoisting passengers in the heart of Québec City for over a century.