A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

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

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

Two stunning 17th-century libraries and a cabinet of curiosities.

Colorful, cheeky signs spill out of legendary New Orleans folk artist Dr. Bob's Bywater studio warning you to "Be Nice—Or Leave."

This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

Once the site of a Native American harvest festival, this humble clearing later played an invaluable role in the birth of jazz.

The only home of the famous French impressionist painter open to the public is now a museum and bed and breakfast.

An abandoned warehouse turned art sanctuary in New Orleans.

Formerly known as National D-Day Museum, this collection commemorates the battles of Normandy and WWII.

Parts of the civil rights movement unfolded in this historic eatery, helmed by the "Queen of Creole Cuisine."

An otherworldly musical haven in The Big Easy.

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

This Art-Deco movie palace is the oldest independent cinema in Atlanta.

A psychedelic tribute to one of Georgia's most unique artistic visionaries, out of place and time in the heart of Atlanta.

This folk art compound was built by a fortune teller on the advice of three people from the future.

A grassroots community effort in the 1970s led to the creation of this beautiful garden full of delightfully whimsical exhibits.

Scattered around Atlanta are little doors with big charm.

An underground magnet for ever-changing street art.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

The only castle in North America to ever house European sovereigns.

Frida Kahlo's childhood home, now a museum of her life and works.

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