The only structure left with direct ties to the Salem witchcraft trials of 1692.

A tiny survivor of the Donner Party disaster.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

This grand gothic brewery has been pumping out suds for over a hundred years.

A much-maligned monument to teetotalism.

This sandwich shop has a century-old elevator behind a sheet of plexiglass.

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

The last remaining building in Washington, D.C., built by H.H. Richardson, one of America's most iconic architects.

A historic arena where the Beatles played their first concert in the U.S.

This Annapolis home was built by one of the signers of the Declaration of Independence.

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

This Asian-inspired tower in a lush urban park provides spectacular panoramic views of Baltimore.

These unusual rooms on wheels are holdovers from the 1960s.

A tunnel with windows, so you don't miss out on the impressive views.

A walk through the historic city center, under the streets of Seattle.

A community gathering place that once housed half-ton tanks and the World's Fair.

Shop for books in the New Orleans house where William Faulkner once lived.

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

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

Fans of vintage Vegas, kitsch, and toy pony-based gambling now flock to a casino called The D.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.