The fastest mail service in the west is tracked and memorialized along this 1,400 mile trail.

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

European castle ruins in an American state park are actually the product of death and grief.

The first car-centric shopping plaza in the U.S. brought a little bit of Spain to downtown Kansas City.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

The blinking light atop the iconic landmark has been sending secret messages for decades.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

World-famous, Pink's still manages to keep its prized cult fetish status.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

This ruined relic of the medieval city of Jahanpanah is a quiet oasis in the middle of New Delhi.

Nelson Mandela lived here with his family from 1946 until his arrest in 1962.

Two giant painted cooling towers make for one of the world’s most epic bungee jumps.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

Constructed on the ruins of a convent, this tower saved countless lives.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

The dining hall that nourishes workers in Chernobyl's Exclusion Zone is also open to visitors.

One of the most poignant ruins of the Chernobyl nuclear disaster, the local football team's stadium has been quickly reclaimed by nature.

This attraction was abandoned after the Chernobyl disaster.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

Legend says this sacred tree was a gift from goddess Athena.

Where commuters walk through remnants of an ancient Greek necropolis.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

An ancient octagonal weather station named for the eight Greek gods of wind.