High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Scenic mount trashmore, Virginia Beach's most curious waterfront still has a couple of secrets.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

Fittingly, America's museum of architecture is itself a magnificently designed old building.