This majestic tree has survived 400 years of storms, droughts, and floods, and is a beloved natural landmark in Missouri.

This failed condo development was reborn as a street art hub.

An ancient holy well said to be used by the patron saint of sailors and travelers, lost in the boggy west of Valentia Island.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

The ancient tomb acts as a calendar that keeps perfect time.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The first museum in the world devoted to sexual gadgetry.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

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

A beautiful geyser under environmental threat.

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

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

Even with its slightly risible name this colossal cross is still able to inspire awe.

The original vault that held the president's remains still stands, empty, not far from where he was finally buried.

A mythical bird etched into the face of a rock doubles as the mascot for a nearby school.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

Two Ming Dynasty lion statues guard the entrance to the journalism school.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

One of few surviving standpipe water towers in the U.S.

What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.

The first rural cemetery west of the Mississippi is home to the elaborate tombs of St. Louis' local beer barons.

This otherworldly church spire reaches up toward the heavens.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.