Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

France's most famous cemetery, with some of its most curious tombs.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

Mosaics, storks, and brothels—this ancient city has it all.

Vast stretch of tide-pools with a unique Moroccan charm.

Despite a fraught and controversial history this African island holds a powerful monument to the tragedy of the slave trade.

God's Saharan sandbox of wrath.

The largest prehistoric ruins south of the Sahara, once a powerful center of international trade.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

Symbolic attempt to overcome the issues of life.

This open air cathedral invites all faiths to worship under the only roof big enough to fit them all: the sky.

At first glance, little checkered structures on the hillside look like they house the living, not the dead.

A museum in the former home of Marxist revolutionary Leon Trotsky.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

A morbid piece of memorabilia from the most famous shipwreck in current history is just one of the many poignant artifacts in this Canadian museum's collection.

The childhood family home of Italian Marxist theorist and politician Antonio Gramsci.

Windblown rock formations in an ancient Roman quarry.

The magic's in the hole!

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

Home to one of the world’s largest collections of model yachts.

A hidden subterranean installation offers a view of the sky.

A Montreal deli that was so beloved that it was allowed to circumvent their laws of language.