Active Neurons 3 - Wonders Of The World

Here are the solutions: I've spaced them out in groups of movements of 4 for easier reading:

3-1:
RRDL ULDR DRRU DLUR DLUR DLUL DR

3-2:
UULD RDLU RDRU LDRU RDD

3-3:
DRUL LULD RULU RRD

3-4:
LULD RRUL DLUL DRUR ULDL DRR

3-5:
ULDR URDL URUL LULU RDLU URDL URUL L

3-6:
ARAR ULDR DLRU UUL

3-7:
RUDL UULA ULDR RDRU ARDR ULDL

3-8:
RULU LDAL DADL ULLD AURA LURD

3-9:
AUAU RADL URUR ULAL URDL

3-10:
UAUR ADLU RULD RDLR ULRR ALDR U