Deepest Lake — Crater Lake

Longest Cave — Mammoth Cave

Fastest Bird — Peregrin Falcon

Longest Covered Bridge — Cornish-Windsor

Fastest Land Animal — Proghorn

Longest Hiking Trail — Pacific Crest Trail

Highest Sea Cliffs — Molok'i

Longest Mountain Chain — Rocky Mountains

Hottest Spot — Death Valley

Longest Reef — Off the Florida Keys

Largest Canyon — Grand Canyon

Longest River System — Mississippi-Missouri

Largest Cliff Dwelling — Cliff Palace in Colorado

Longest Span — Veranzo-Narrows Bridge

Largest Delta — Mississippi River Delta

Loudest Animal — Blue Whale

Largest Desert — Great Basin

Most Active Volcano — Kilauea

Largest Estuary — Chesapeake Bay

Rainiest Spot — Mount Wa'ale'ale

Largest Flower — American Lotus

Oldest Trees — Bristlecone Pine

Largest Freshwater Fish — White Sturgeon

Oldest Mountains — Appalacians

Largest Frog — American Bullfrog

Tallest Cactus — Saguaro

Largest Glacier — Bering Glacier

Tallest Dam — Oroville Dam

Largest Land Mammal — American Bison

Tallest Dunes — Great Sand Dunes

Largest Lake — Lake Superior

Tallest Geyser — Steamboat

Largest Natural Bridge — Rainbow Bridge

Tallest Man-made Monument — Gateway Arch in St. Louis

Largest Plant — Quaking Aspen

Tallest Trees — Coast Redwoods

Largest Reptile — American Alligator

Tallest Waterfall — Yosemite Falls

Largest Rodent — American Beaver

Windiest Place — Mount Washington