Chattanooga, Tennessee
Ruby Falls
The mysterious wonder of an underground waterfall is illuminated by multicolored lights.
Places I want to go
Places on this traveler's wishlist.
Chattanooga, Tennessee
The mysterious wonder of an underground waterfall is illuminated by multicolored lights.
Haines Falls, New York
A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.
Cougar, Washington
The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.
Mammoth Lakes, California
Towering basalt columns, a creation of fire and ice.
Issaquah, Washington
A whimsical village of unique treehouses resides in a Washington forest.
Clackamas County, Oregon
Hollowed out cedar log tubs set in an ancient towering forest.
Fackler, Alabama
This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.
Fort Worth, Texas
A modernist landscape of water and sci-fi concrete.
San Diego, California
Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.
Mill Run, Pennsylvania
Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.
Sevierville, Tennessee
Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.
Natural Bridge, Virginia
A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.
Key Biscayne, Florida
An underwater city for the dead.
Baltimore, Maryland
It’s not hard to see why the historic Peabody Conservatory of Music’s library has been described as a “cathedral of books.”
Midway, Utah
This geothermal hot spring hides beneath a slowly growing mineral dome.
Winslow, Arizona
This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."
McKenzie Bridge, Oregon
This frequently-photographed waterfall takes only a short hike to visit.
Colorado Springs, Colorado
Strange red rock formations that have been attributed to a higher power for hundreds of years.
San Francisco, California
Olfactory delights in San Francisco's Botanical Gardens.
Mammoth Cave, Kentucky
The world's longest known cave system.
New Orleans, Louisiana
This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.
Indianapolis, Indiana
A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.
Carlsbad, New Mexico
The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."
San Francisco, California
A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.