Artist James Turrell's ode to dawn and dusk on the campus of Rice University.

An oddities shop packed with twisted treasures inspired by Oscar Wilde and Edgar Allan Poe.

This rare surviving broch is one of Scotland's most impressive Bronze Age structures.

The sign marks one of the endpoints to mainland Britain's longest overland travel route.

Nestled atop a wind-swept crag in the Scottish Highlands is a lonely memorial to a beloved hiker.

A cross marks the spot in a small Scottish village that claims to be the exact center of the country.

From here, the loch appears to take the shape of mainland Scotland.

A castle in the Scottish Highlands has been continuously inhabited since the 1300s.

This macabre monument atop an ancient well gives a nod to a brutal episode in Scottish clan history.

This single-track road rewards brave drivers with stunning Scottish scenery.

Scotland's only funicular railway is also the United Kingdom's highest.

The largest greenhouse in the world is home to over one million types of plants.

This humble hole-in-the-wall is home to an incredible pig ear sandwich and serious civil rights history.

A decaying building marks the site associated with Emmett Till's brutal 1955 murder, which helped sparking the civil rights movement.

A dramatically eroding canyon thousands of miles from the desert.

This university research project is the U.S. government's weed dealer.

This monument to the victims of a tragic explosion is said to turn and look at passing cars.

A preserved stretch of ancient fossilized trees with an impressive gem collection to boot.

An angular maze of concrete in Grand Rapids acts both as public art and as a staircase for fish traveling upstream.

At Fountain and Division, in the shadow of Kendall College of Art and Design, lays the story of a fictional culture whose political system was used under license and who finally rebelled.

At HopCat, a marker honors fictional creatures with the ability to travel the missing dimensions of Kcymaerxthaere.

Outside Grand Valley State University, you'll find a bench upon which many were said to have sat according to the fictional Kcymaerxthaere, waiting for a guide of time.

These sprawling mines once served as a source of plaster and today serve as a storage facility.

Outside Hope College in Holland, Michigan, a marker honors a University without people from the fictional Kcymaerxthaereal times.