Mexico City's largest market contains a Willy Wonka-esque wonderland.

A 16th-century horror show built in a lovely Italian garden.

These spectacular, symbolic serpents lie within the shadow of the Great Temple.

A lavender labyrinth so large it’s visible on Google Earth.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Olfactory delights in San Francisco's Botanical Gardens.

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

More than 21,000 images fill this overlooked gem of a prehistoric site.

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

The humble field where the first Major League Baseball game was played.

The last street in Pittsburgh that's paved with wood.

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

A macabre farm reserved part of its 222-acres for dead bodies, all in the name of science.

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

This Old Testament garden features 100 plants from biblical times.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

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

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

The site of the one of the most deadly train wrecks in American history.