A bronze statue of the famed Prussian naturalist commemorates the year he spent in Mexico.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

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

There is nothing like a religious festival celebrated with blow-up sledgehammers.

Mexico's astounding mummy museum with "the world's smallest mummy."

Kitschy horror displays now fill the house where some very real serial killing took place.

The famous artist couple lived and worked here, in two different houses separated by a bridge.

Part bookstore, part café, and part forest.

Superstitious? Discover the witchy side of Mexico through its largest esoteric market.

Twelve natural mummies are displayed in the crypt of this former monastery school.

At a museum of everyday objects, it is the act of collecting that is really on display.

A geothermal energy project gone wrong is fracturing the city's picturesque architecture.

Why walk on this historical site when you can zoom down instead?

A once-thriving hotel in the Swiss Alps couldn't compete with climate change.