Places julianfkeller99 Wants to Go

Medieval streets buried beneath a papal fortress now form an underground city you can walk through.

This map, on display in the Library of Congress, and one of only seven known to exist, is the very first map of the United States.

A large portion of this navigable canal runs under Paris's famed boulevards.

We're not in Kansas anymore: the Strabag headquarters has a playful upside-down addition.

Odd castle-like structures for collecting water sticking out of the Mississippi River.

A historic sanctuary in the last refuge of the Aramaic language.

Resting place and mausoleum of the founder and first president of Turkey.

This underground tunnel system built during World War I offers a fascinating glimpse into Pula's military history.

This historic Art Nouveau mansion has guided tours and impressive views of the Currituck Sound.

The world's northernmost Islamic garden is in the chilly climate of Canada.

Experience the pivotal Civil War battle at this interactive museum.

This feat of diesel-powered engineering enabled boats to bypass a series of five locks.

One of the few Tudor palaces in Germany, which hosted a historic WWII meeting.

This 1920s mansion in the Outer Banks has some of the best examples of Art Nouveau ornamentations in the United States.

Once the largest source of mercury in the Americas, these ruins earned the name “Mine of Death.”

A World War II–era submarine museum where visitors can spend the night aboard.

Stand on the rim of a dormant volcano and gaze across a vast ash plain frozen in time.

Five matching towers make this church unique. Legend credits a troll.

Today this former Nazi concentration camp stands as a poignant memorial to the victims of fascism, and a warning from history.

Immersive exhibitions track Saint Petersburg’s past and present.

One of Africa's windiest and most scenic roads is a national symbol of Angola.

The last surviving submarine from a strange chapter of Finnish history.

A haunting museum chronicling the bloodiest battlefield of World War I.

Cross towering trestles and tunnels on a historic canyon rail trail.