This majestic building, where Brazil's coffee brokers once bought and sold beans, now houses a coffee museum.

Inspired by a foil-wrapped potato, (seriously) the Markel Building has been deemed one of the 10 ugliest buildings in the world.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

A nostalgic bibliographic gem.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

An original apothecary from 1792.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

An FDR-era tuberculosis sanatorium has stood abandoned in the suburbs of the U.S. capital for over 30 years.

This shop and studio is dedicated to the art of the book, from letterpress to bookbinding.

A library and museum dedicated to typography.

A 140-year-old castle with underground caves hidden in San Francisco.

Fonts are born and bred here at the oldest letterpress type foundry in the United States.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

A museum befitting the city responsible for supplying the majority of the world's LSD.

A storybook European village in Berkeley.

Handmade treasures from around the world.

The palace of the King of Kings, burned by Alexander the Great.

The largest Neolithic ruins in the world hide a notably clean prehistoric metropolis.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

27-room home built with the fortune of a sugar magnate.

Half of a house.

A historic hotel that made a cameo in Hitchcock's classic film has no intention of letting guests forget its fame.

A 300-ship graveyard, with a few still visible at low tide.