This massive geographical sculpture is so subtle, it's possible to pass by it without noticing.

A picture-perfect town, perfect for blowing up.

The longest living non-clonal organisms on Earth.

Nestled in Onondaga State Park, over 100 canoes carefully stacked in a replica of the famous standing stones.

A flat slab of stone perched hundreds of feet above the Gasconade River in the northern Ozark mountains.

Like Stonehenge, but with boats and oodles more charm.

Walk up a ramp through a forest for panoramic views of Lake Michigan.

The site of an ancient Mississippian settlement that appears to have flourished during the 10th to 13th centuries.

Hidden in magnificent rolling countryside, see what may be the largest modern stone circle in the world at Wisconsin's very own "Stonehenge”

Almost half-way between the Equator and North Pole.

Literally a million fascinating cartographic artifacts are held in this sprawling university collection.

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

A 70-foot replica of the famed Eiffel Tower.

This improbable contraption was passed down through five generations of industrious Tennesseans.

In one of America’s oldest mountain ranges, a long-awaited section of a scenic highway is now open to the public.

The secret city built by the Manhattan Project.

This now-abandoned part of the original transcontinental railroad route provides a surreal driving and historical experience.

A striking, menacing sandstone peak towering above a landscape that's equal parts Mordor and the Moon.

Despite its name, this route in southern Utah offers a heavenly day trip.

Once a menacing challenge for trailblazers, this trail is now the most scenic drive in Utah.

High in the Sacramento Mountains, a facility dedicated to studying the sun.

Explore a misty river canyon from a metal bridge system.

Apparently, the whole cosmos emanates from this plain concrete tower.

This towering volcanic plug stands out among the dramatic formations that dot this otherworldly desert valley.