A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

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

There aren't too many operational funiculars around, but Pittsburgh has two!

The penultimate and final resting places of British General Edward Braddock—minus a few bits and pieces.

Chase waterfalls, hiking trails and more.

The first blast furnace in the United States that used coal and coke fuel instead of charcoal to make pig iron.

This beautiful stone arch bridge wasn't even expected to stand for one day, but people have been crossing it for centuries.

The facade of this relic from the Klondike gold rush is decorated with over 8,800 pieces of driftwood.

A monument commemorating the role of Alaska's native Tlingit guides in the Klondike Gold Rush.

A historic freight system that found the true gold rush is in tourism.

Originally a brothel during the Klondike Gold Rush, this bar once used dolls to denote when ladies were working.

This "Alaska-style" billboard is over 100 years old.

This abandoned naval battery stood at the ready as recently as the 1980s.

An icon of the city, this chapel features an amazing dome ceiling and offers panoramic views.

A hidden three-foot-wide house separates these two regal churches.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

Iron Age runes and ruins hide in plain sight along this Portuguese beach.

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

The Midwestern United States' tribute to Michelangelo is a foam statue sprayed with gaudy gold paint.