An enormous image of Utah's salt flats made entirely from tape.

Where a guard killed nine German prisoners during one of the worst 20th-century POW camp massacres in U.S. history.

This raised bulls-eye visible from space was the subject of an intense geologic controversy.

Visitors to this library are in for a real-world education in modernist architecture.

Jurassic Park—A Still Life.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

City law dictates that this mountaintop cathedral containing the heart of a saint is to remain the tallest building in town.

Montreal's giant farmer's market is a foodie's best friend, especially in the winter months.

Every year, the colorful murals of Montreal get a complete makeover.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

This hidden park hosts a rogue’s gallery of eccentric architectural obelisks.