MonValleyMan's User Profile - Atlas Obscura
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Coraopolis, Pennsylvania

Fraley's Robot Repair

A retrofuturistic art installation in the Pittsburgh Airport.
Farmington, Pennsylvania

Jumonville Glen

The site of the little-known Pennsylvania battle that sparked the Seven Years' War.
Altoona, Pennsylvania

Horseshoe Curve

This dramatic rail curve was once the target of a failed Nazi attack.
Salisbury, Pennsylvania

Mount Davis

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.
Altoona, Pennsylvania

Leap-The-Dips

Behold the rickety wooden glory of the world's oldest operating roller coaster.
Irwin, Pennsylvania

The Big Mac Museum

This shrine to McDonalds' most iconic sandwich holds a 14-foot tall burger.
Harrisburg, Pennsylvania

Harrisburg's Mini Statue of Liberty

A local prank turned town icon.
Avella, Pennsylvania

Meadowcroft Rockshelter

This Pennsylvania cave holds evidence of the oldest known inhabitants of North America.
Philadelphia, Pennsylvania

Philadelphia City Hall

This elaborate towering structure was once famed for its revolutionary height.
Ohiopyle, Pennsylvania

Kentuck Knob

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.
Pittsburgh, Pennsylvania

Canton Avenue

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

Elfreth's Alley

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

Eastern State Penitentiary

World's first "penitentiary," meant to be humane, drove men insane.
Pittsburgh, Pennsylvania

Duquesne Brewery Clock

The largest clock face in the United States is twice the size of Big Ben and infinitely more ad-sponsored.
West Mifflin, Pennsylvania

The Blue Whale of Noah's Ark

The last funhouse of its kind, where guests enter through the mouth of an 80-year-old blue whale.
Pittsburgh, Pennsylvania

Exposition Park Marker

A piece of baseball history is preserved in a Pittsburgh parking lot.
Pittsburgh, Pennsylvania

Armstrong Tunnel

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.
Pittsburgh, Pennsylvania

Winter Mausoleum

An imposing pair of sphinxes stand guard outside this Egyptian Revival tomb.
Pittsburgh, Pennsylvania

Allegheny County Belt System

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.
Pittsburgh, Pennsylvania

Former Pittsburgh Stock Exchange

When oil was discovered just outside of Pittsburgh, the city became home to this regional stock market.
Pittsburgh, Pennsylvania

Bacchus House

The god of wine stares out at passersby on this busy Pittsburgh thoroughfare.
Pittsburgh, Pennsylvania

The Immaculate Reception Monument

This spot memorializes one of the greatest plays in NFL history, unless you happen to be a Raiders fan.
Pittsburgh, Pennsylvania

Gene Kelly's Pittsburgh Plaque

This plaque marks a place where one of Hollywood’s most famous dancers got his start.
Pittsburgh, Pennsylvania

Mellon Institute Columns

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.