A former waterfront market is now in the center of town due to some interesting Boston engineering.

The site of Paul Revere's historic two lantern warning.

An eccentric inventor's castle home with its own indoor weather system.

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

Tiny historical streetcars wind through a small scale version of Crescent City in this whimsical train garden.

This historic New Orleans cemetery is the final resting place of members of the Independent Order of Odd Fellows.

New Orleans' famous cemetery, located on the site of a former race track.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

After the parade, students throw their beads on the tree hoping for good luck on exams.

This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

The stone labyrinth in this New Orleans city park was laid to symbolize healing in the wake of Hurricane Katrina.

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.

For 150 years one family has been producing the iconic hot sauce on a bayou island made of salt.

A 19th-century Gothic, castle-like statehouse by the Mississippi River.

The world-record holder for the longest bridge stretching continuously over water.

Kentucky, Tennessee, and Virginia meet at this point in the Cumberland Gap.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

This 150 foot seven-tiered cascading waterfall is one of the hidden gems of the White Mountains.

Even Henry David Thoreau found this glacial pothole irresistible.

The first declared National Monument in the United States.

A beautiful geyser under environmental threat.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

An architect's childhood fantasy treehouse made real.