St. Augustine's record-setting narrow street was designed to protect against pirates.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

Known as "Toronto's Flatiron."

This whimsical fountain pays tribute to Toronto's four-legged friends.

One of the largest underground systems runs under Canada's largest urban center.

The giant birds honor two native North American species.

This half-ton piece of the Alps sits at the base of the CN Tower.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

This urban oasis is a marvelous meld of music and landscape architecture.

The hometown of Popeye's creator is littered with a growing collection of granite cartoon characters.

The only mill in the state that features a covered bridge.

This 1854 courthouse along the Mississippi River has a storied history.

Often referred to as the largest spring in America.

Erosion and time have created a naturally-formed water park.

In the St. Francois Mountains in the Ozarks at 1,772 feet above sea level, Taum Sauk Mountain is the highest (and possibly oldest) peak in Missouri.

Giant granite rocks standing end-to-end like a train of circus elephants.

What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

A commemoration of over 150 of St. Louis's favorite sons and daughters.

University City's quirkiest resident lives in a park named after its first.

This is not your typical jungle gym.

A chessmaster's dream destination.

The first rural cemetery west of the Mississippi is home to the elaborate tombs of St. Louis' local beer barons.

This spot in St. Louis, marked with a simple sign, has seen more pro baseball than just about anywhere else in the world.