Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Over thousands of years, this slot canyon was carved out of the bed of an ancient lake.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

One of America’s oldest and spookiest hotels, thanks to the residency of ghosts, dead presidents, and Alfred Hitchcock.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

An extensive, if one-sided, history of U.S. law enforcement's war on drugs.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

Dramatic river bend surrounds a natural red-rocked pedestal.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

A monument celebrating the idea of reaching inaccessible places.

One of the oldest active carousels in the country—but it might be missed by all but the keenest-eyed boardwalk strollers.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

Mind-blowing carvings and fantasy ice scenes grace the largest year-round ice environment in the world.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

The world's oldest continuously operating airport was founded by the Wright Brothers.