Find the correct letter.

The color combination appears twice.

Start at the R.

The dome in the front right and the building facade in the front left go together. The color sequence of the dome must be traveled on the building facade. Start is at the R. The route creates the word RAVENSBURG. The correct last letter sought is the G.
=> Solution: G

Find the correct letter.

Create the correct shape.

This includes the shape scheme – pay attention to the order.

Use the shape scheme and the number on the wooden chest (1162) to create the shape of a letter. The correct order of the parts is displayed next to the shape scheme. The four parts (1, 1, 6 and 2) create the shape of the letter D.
=> Solution: D

Find the correct shape.

Logical sequence.

Plus five – plus five.

The cryptic symbols on the wall must be transformed into numbers according to the shape scheme. It creates the numbers 5842, 6347, 6852, 7357, … , 8367. The logical order can be found by adding five to the first two and the last two numerals. The correct number sought is 7862. Transformed in the shape scheme, this consequently creates a circle.
=> Solution: Circle

Find the correct letter.

From top to bottom.

Delete the specified shapes.

The cryptic symbol contains the shapes of the color scheme. The shapes that must be crossed out are located below the drawing. Cross out the shapes from the top to the bottom. Only two shapes are left. They create the shape of the letter E.
=> Solution: E

Find the correct number.

The tray has the arithmetic symbols.

Multiply and divide first, then add and subtract!

The chemical utensils on the screen must be calculated together. The respective color from the color scheme stands for the number. The tray shows which arithmetic symbols must be used for each utensil. Therefore, the equation is: +5×7-8×6+4×3-1+6 = 4
=> Solution: Four

Find the correct color.

This includes the arrows on the frontmost screen.

Logical sequence.

The colored wind turbine blades must be transformed into numbers. The arrows on the frontmost screen indicate the order of the numbers per wind turbine. The numbers are 472, 563, 654, 745, 8?6. The logical sequence is solved by adding 1 to the first and third numeral and subtracting 1 from the second numeral. The missing number (?) is the 3. Therefore, the correct color is pink.
=> Solution: pink