When young Indy disappears in the magic box, he would pass directly through the floor, to underneath the train. Yet when we see him through the rear of the train, he is clearly running onto the track from the side.

Scene: Young Indy

Blood dripping from alternate corners of Indy's mouth aboard the ship, and when fighting on the boat in Venice.

Scene: The Coronado

The flower on Elsa's blouse changes size when she is inside the catacombs.

Scene: The Catacombs

While in the catacombs, burning pieces of Indiana's torch fall into the "petroleum," but it doesn't ignite until someone throws in a match.

Scene: The Catacombs

As the fire breaks out, Indy gives Elsa the torch, but in the next scene it is gone. You can also see stuntmen instead the actors.

Scene: The Catacombs

After swimming under petrol in the catacombs, Jones surfaces completely dry, except his wet hair, which makes wet spots on his clothes.

Scene: The Boat Chase

After the Joneses escape the Austrian castle by motorcycle, they stop at a crossroads. Here, the signpost reads "Venedig" in the first shot of the sign and then the English version, "Venice" in the subsequent close-up shot.

Scene: To Berlin

Rudder of the plane that Henry Jones Sr. (didn't) destroy.

Scene: Air Chase

Indy's face is almost black from dirt and grime in the scene where the tank's gun is grinding dirt onto him from the wall, yet after he climbs up from the side of the cliff to join the others his face is hardly dirty at all.

The turret of the tank is (not) attached to the rest of the tank after it hits the bottom of the cliff.

Scene: The Tank Chase

Henry Jones Sr.'s beard around the time the tank falls off the cliff.

Scene: The Tank Chase

Level of water in the Holy Grail.

Scene: The Temple

For a split second, when the villain jumps from the dock to Indy and Elsa's boat, it's clear he slid off the other side into the water.

Scene: The Boat Chase

Indy kicks the periscope on the tank, spinning it a half turn anti-clockwise, and yet when seen from inside the tank, it makes a quarter turn in the clockwise direction.

Scene: The Tank Chase

When Indy emerges from the cliff his whip is in his whip holder.

Scene: The Tank Chase

Wire holding the bow of the boat when it's near the propeller.

Scene: The Boat Chase

When Indy realizes the X on the floor and runs up the stairs the book shelves and the books behind him on the second floor are obviously fake.

Scene: The Library

Indy and Elsa dive under the burning petroleum. If it was really petroleum, it would have burned their eyes and possibly blinded them. Even if it was only a top layer, they would have passed through it.

Scene: The Catacombs

In Venice as Indy's boat is being dragged into the big ship's screw the wooden hull breaks away - revealing that there is no motor in it, in fact there is nothing, it's just empty! When Indy and Elsa are coming to the end of the boat scene, one of the boats hits the propellers of the big ship and is "chewed up" to about mid-boat, in the next scene the hatch is not broken and miraculously back in place.

Indy and Henry are at the Nazi book burning, but the Nazi book burning happened in 1933, and Last Crusade is set in 1938.

Scene: The Book Burning

Hitler signs his name with the wrong hand when he autographs the diary, spells his own name incorrectly, and creates a signature unlike other examples that have survived.

Scene: The Book Burning

In the airport lounge, two people are reading German newspapers dated 1918, twenty years before the film is set.

Scene: Berlin, Airport

Blasting holes through the rudder of a small plane will not disable it, especially when Jones Sr.'s body was enough to cause wind drag. Although level turning would be impossible, the plane could still maneuver with the wing ailerons, which are more critical to level flight if ever damaged.

Scene: The Air Chase

The name Jehovah was indeed spelled with an "I" in classical Latin, but this is because there was no "J" in the language then; "I" served both purposes. The grail temple was built in the Crusader era, after the forms "I" and "J" had become separate -- which is why there are both "I" and "J" tiles. At this time "J" was the only correct first letter of Jehovah.

Scene: The Temple

A view from Donovan's apartment shows a modern building visible in the background.

Scene: Talk with Donovan

Set in 1938, the Joneses cross the Atlantic by airliner, even though this service did not start until 1939.

Scene: To Venice

When Indy wants to get Elsa, a rifle is thrown across the room breaking a lamp and an ashtray. The glass ashtray is a standard item manufactured exclusively by an LA glass company and was not made until the late 50's-early 60's.

Scene: Castle Brunwald

In 1939, the truck that Marcus is kidnapped in displays the German Afrika Korps emblem, not introduced until 1940.

Scene: Sallah and Marcus

Indy & his father get on a German airship in 1938, yet there were no commercial airship flights after the Hindenburg disaster of 1937.

Scene: The Air Chase

When Indiana steps on the "J" instead of the "I" and falls through, he hangs on by the surrounding tiles (which are also wrong letters). Although they would break under the weight of his step, he manages to pull himself up by them.

Scene: The Temple

Indy's mail contains a letter with a plastic window. Glassine or celluloid windows were common, even then.

Scene: Henry's house

It is claimed that the "X" on the library floor disappears after it is discovered, but this is merely an illusion caused by the reflective qualities of the floor material. This is supported by the fact that the "X" was only discovered when viewed from a high vantage point.

Scene: The Library

Could a bird actually stop the propeller of a plane when Indy's father scares the birds into the path of the German plane? At least one viewer says yes, it could; at the very least, it could stop the engine if it gets in the air intake.

Scene: The Air Chase

The butler in the castle says "...and if you are a Scottish lord, then I am Mickey Mouse," but his mouth movements indicate something completely different than the words "Mickey Mouse."

Scene: Castle Brunwald

The initial scenes of the movie are shot in Arches National Park (which is, as is stated, in Utah), and the troop dismounts at Double Arch. Indy takes the Cross of Coronado from a cave near that arch. However, there is no train line for miles in any direction.

Scene: Young Indy